Bộ đề tinh túy ôn thi THPT Quốc gia môn Hóa năm 2022 có lời giải chi tiết

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Kinh nghiem on thi THPT quoc gia mon Hoa---·--- . ·-·---·---·· IV

MUCLUC

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I

DS

dap (mg nhu

c!u

hoan thien

kiSn

thirc

va

nang cao ki nang lam bai, ren luy~n tam Ii va ki nang

lam

bai, hoan

thi~n cung c6 kiSn tlll'.rc,

nh6rn vi~t

sach cua LOVEBOOK

da day

cong bien

so~n, tuy~n tjp, s1.n1 t!m va giai chi tiSt

cu6n sach

"B<) d~

tinh

my

on thi THPT qu3c gia

mon

H6a". D~

lam mqt bai

thi THPT qu6c gia

d{lt

k~t qua cao c§n nang cao toan cti?n kien thtrc,

hiSu

sau

sic vful

^ct~ va

m(>t

di~u quan tr9ng khong

kem

d6 la ki nang lam bai.

C6 ki~n

thuc nhung

khong

c6

ki nang thl se khong

th~

hoan thanh s6m va

lqp thm

^gian

dugc,

vful d~ Ia khong

chi lam dugc

ma phai Iam trong

thbi

gian nhanh nh§.t c6 thS. I>~c

bi~t

la v&i nhfrng

mon thi

trite nghi~m khach quan nhu

mon Hoa,

Li, ...

Hi€~

dugc v§n

ds

do chung toi da cb g~ng tuy~n t~p nhfmg

ds

^{thi hay}

nh&t, dam

bao kisn

thtrc

va

sat

v&i chuong trinh thi. I>~c bi~t la nhiing phuong phap giai tic nghi~m d~c

sic nh§.t,

nhanh

nhit, tf>i

^1.ru

nhit va giai

chi ti~t

cit ca cac vfu:t dS ca

^d~

va kho

phu hgp v&i

t&t ca

cac em. Cu6n sach n6i rieng va

b9 sach

n6i chung chua

d\l'Ilg cit ca nhfrng

kinh nghi~m,

nhung

t~m

long

nhi~t huy~t mu6n chia

se kiSn

thfrc

va

nhfmg bi quy~t

d8

m(it phfui nao d6 giup cac em

d{lt kSt

qua t6t trong ki

thi d.;i.i h9c.

V&i vi~c da may mful d3 Thu khoa truong d.;ti

hQc Dugc

Ha N{>i

va

truong

D.;ti h9c Y

Ha

N(,i v6i di~m

thi

2

khf>i Ava

B d{lt 29

di~m.

^Anh

mu8n

chia

se

doi

lai

dSn cac em. Mu6n

h<;>c

t3t

tru&c

hSt

nen xac

dtnh

ro rang

ml,lc tieu

h9c t~p, c6

ni€m

tin,

d9ng l\fc

cho rieng

minh

d~ hu&ng t&i

va

c6 rn{>t

thcri

gian bi~u, k~ ho{lch hQc tjp nghi ngcri hgp If. Tung

mon

hQc c6 nhiing d~c di~m rieng,

v&i mon H6a

cac

em nen nAm

vung kisn thuc Ii thuy~t va phuong phap giai bai.

KSt

hgp I~i

va nang

cao nen

b&ig

each Iuy~n d~

va

lam

th~t

nhisu

bai ~P,

rut kinh nghi~m va ghi nh& nhung di~u

dn

^chu

y.

Vi~c

lam

bai ~p

. va

Iuy~n

dS se

giup cac em

nit nhiSu,

n6 vira

hmm thi~n

ki~n

thtrc

vira nang

cao

ki

nang lam

^bai.

v

^&i

doi foi tam

S\f cua

anh hi

vc;mg Se

^giup

cac em

mgt

phk nao

^{d6. Chuc}

cac em se c6 nhfrng thanh cong khong

chi trong Id thi d{li hQc

ma con ca

trong cu(k

IV

Doan Trung San - C.,u h9c sinh THPT Phu Cir - Thu

khoa

BH

Dtrqc

Ha

N{H,

29

di~m kh6i B Cac ban doc gia

than

^m~n!

Nguyin Thanh Long - Cl!ll hec sinh chuyen Toan Phan Bqi Chau " Nghf An

^M

Thii khoa DH

Dll'(}'C

Ha N{H, 28,5 diim kh6i B

Xin chao t~t

ca

cac em

hoc

sinh

yeu

guy tren moi mien T6 quocl

Cac em

^da

hra chon mua

^va

dang dm cuon sach

^nay tren tay,

hfui la

trong long cac em dang S\JC soi ffiQt ngon lira khat vong dUQ'C bUCJC chan VaO canh c6ng

tnrong Dai hoc ma cac

em mong

muon. Ki thi THPT

qu6c gia, nhu cac em ciing biet,

la

m9t kl thi quan trong cua

am

nguoi, va anh tin rang cac em dang c6 ging h~t sue cho muc tieu d6 nhir m<)t thoi bon anh da tung.

Nhtrng

con nguoi vi6t nen

cu6n sach nay' ho ciing

da nrng

nhu

cac em, mm day thoi

ho

^da tung

trai

qua cam giac cua cac em bay

gio.

Va gio day, khi SlJ

c3

gang Cua ho

da

diroc d8n

dap

xirng dang, ho muon giri giro vao cac em-the h~ di

sau

khong chi

nhtmg

kiSn

tlnrc

quy

bau

ma ho

hoc

diroc ma con Ia nhtrng kinh nghiem, va

ca

nhtrng

tam tu

tinh cam

An

sau tirng bai toan,

Nhirng

tac

gia cu6n sach

nay,

ho

hi€u diroc

rfulg s1,1

quy~t tam va c3 gfulg cua cac em, doi khi lai

bi kim

ham Mi viec khong co diroc nhfing tai li~u

tbt, nhtrng

phuong phap

hi~u

qua. V

&i mong mu An cung cip

cho

cac em m9t b9

sach hay va hiru Ich,

va

ciing

la

mong muon nhtrng ki~n tlurc ma minh hoc diroc

se giup ich diroc cho CQng d6ng,

nh6m

bien soan da

cung nhau lam viec voi cit ca

^{S\! nhi~t}

huyet dS cubn sach c6 the

d!n

dugc tay

cac em.

Trong VO

so

nhtrng tai li~u

on

thi THPT quoc gia, c6 le tai li~u b& Ich nhit

la

sach giao khoa va cac d~

thi

thir

cua cac tnrong co

uy tin. Vi v~y, anh mong cac em

se

hoc duce nhieu

di~u

qua

tuyBn

tjp lai giai nay.

Chuc

cac em

c6

m9t mua

thi thanh

cong va

thing

Ioil

Mong

mqt

ngay

nao

do,

anh

co tha

thfty

nu CUO'i rang

rcr

tren

moi cac

em!

"Niem tin chienthang

se

dua ta d€n b€n bo vui ... "

KINH NGHI£M HOC H6A

;I

~..;,;_.._..,.;._.~·· ·-·~·· ,· .-~:~~:--:---...1....;,~~H.r:-;_-:_r;r!:.-~.-r:.-:-_--:·:;---;-.-.-::-;;.>_-::-:-:-&~~ ·-.- •·:: .--:. ~_...,_.· _• ••. · -- ... ~-~-~-- .~-~;•:-::-:~;-~·7::_::~: "".'.:;-:-~~· :•.:~ :-:;· ..• _-:• .-•_.•. ,:_._."

v

Trin Van Bong - Cvu h9c sinh THPT My D(rc A - Sinh vien BH Y Ha N9i (28 diim kh6i A, 29 diSm kh6i

B)

Buoc vao giang duong f>~i h9c khong chi la

UO'C ma CUa m9i hqc sinh, ma no con la hi VQng CUa

cha m~, th!y co. Con ducmg thµc hi~n n6 th~t khong h@ don gian va diy nhfrng chong gai, thfr thach tri thong

minh

ciing nhu

S\I

k.ien

tri CUa

cac em. Anh hi vqng rfulg cu6n sach nay se phdn nao giup cac em vfrng bu&c hon tren con duong iy! C6 le day la cu6n sach ddu tien t~p hgp nhfrng bai toan hay tir cac d@

thi, cung voi nhfrng each giai nhanh, sang ~o dugc rut ra

tit

qua trinh h9c ~P Clla nh6m bien so~-c6 ths noi day la

^kinh

nghi~m ban than.

H~n gijp cac em 4ti canh c6ng truong f>~i hqc vao mqt ngay khong xa! Chuc cac em h9c t6t!

* Vi

phdn bai tt;ip:

Mu6n lam

tbt eac bai ~P H6a

h9c, ta c§n phai v~ d\Ulg gifra Ii thuy~t va each tinh toan.

Cfui

phai

nh6

cac phuong

trinh

h6a h9c, cac thu

t1,l'

xay ra phan ung ... vs each tinh: ck ap dµng nhufui nhuysn cac each nhu: tang giam khbi Iuqng, s6 mol; Bao toan mol electron, bao toan nguyen t6, bao toan di~n tich; Phuong phap trung binh, Phuong phap quy d6i, ... Ck phai ap dµng

thanh

th\!C d8n khi nao chi ck nhin d@ la ta c6 thS biSt ngay each

lam cho bai do. Mon H6a la mon trftc nghi~m. chi c6 90 phut nen t6c di) lam bai la

VO

cung

quan

tr9ng, phai dam bao vita nhanh vira chinh xac. v a khong co each nao ds luy~n lam nhanh va chinh xac hem each lam nhisu de. Khi cac b~ lam th~t nhiSu cts, eo ths 1k m9t se lam thi@u thm gian, tuy nhien lam nhiSu cac b~ se ctAy nhanb dugc tac d9 lam bai. v a khi gijp m9t bai kh6, nsu khong lam dugc, ck phai Mi b~ be hoijc th:iy co ngay

ct~

biSt each lam.

*

V€ kl niing lam bai:

d9c kid@ lam

tir

cau dl d@n cau kh6, sir dl,lllg cac each lam tr&c nghi~m n1m: lo?i tru, mau thufui giua cac phuong

^rui

(Vi d\l: n@u

A

dung thi B, C cilng dung), va dijc bi~t la ki nang thfr dap an {hO?C d\l" doan dap an r6i thu) eho cac eau bai tj.p.

^Thu

ngugc l~i dap an la m9t each rit hfru hi~u, doi

khi

vi~c thu dap an con nhanh hon ca chung ta tinh binh thuong.

Duong Cong Trang - O,U hoc THPT Ham R6ng-

Thanh Hoa-Thu

khoa

DH Kinh T~

Qu6c

Dan

Sach la m9t kho tang

tri

tlnrc, n6 chtra dung nit nhiSu thir ma con

ngiroi

ta co thS hoc

hoi dtroc, Tuy

nhien vi~c chon sach ma hoc cha phu hop cung khong phai Ia chuyen de, va ciing khong phai sach nao cling hay cts dap irng nhu du cua

chung

ta. La met hoc sinh ph6 thong dang chuan bi

buoc

vao ki thi THPT qu6c gia, ngoai ki~n

thirc

co ban duce trang bi 6

sach

giao khoa

(SGK), chung

ta con cit nhieu kiSn

thirc

nang cao, bai toan kh6 ma

SGK

khong th~ dS c~p hSt duoc, Rit nhi@u

^tai

lieu tham khao vist dai dong, kho hisu, each lam khong dap img duoc yeu d.u cua ml)t

bai

trfic nghiem nen dt kh6 khan cho hoc sinh trong viec hoc hoi ki@n tlnrc

tir

nhtrng trang sach d6. Tuy nhien, v6i LOVEBOOK- ban doc se nh~ !My trong cu6n sach nay

chira dung nhisu bai ~P kho, va

nhimg each lam fit ngfu gon, dS hiSu. Hoa

hQC

la m9t man

thi trac nghiem, yeu c!u la phai lam nhanh va chinh

xac, v

6i. m<}t cu6n sach

d@ nay, cac ban co ths ren luyen cho

^minh

cac

ki nang khi lam bai, cfing nhir

each XU

Ii

tinh huong khi lam m9t bai ijp kh6. Va toi ciing da tirng la hoc sinh ph6 thong, toi biSt cac ban dn

^g1

cr nhiing cu3n sach tham khao, va toi ciing

aa dua nhfrng th(c d6 vao cu6n sach nay. Cac ban hay doc cu3n sach nay, hay c6 gfulg hoc ~P dS c6 duce m9t diSm thi nhu y muon!

Khac voi mon

Li,

ph.§n Ii thuySt Hoa thuong kh6 va

danh

db hoc sinh hon. E>e nam vtrng kiSn thee

Ii

thuySt mon Hoa, khong con each nao khac ma chu yeu la hoc thuec, C6 th~ hie diu ta khong th~ thu9e het, ma se hoc thu9c

tir tit,

va dijc bi~t phai lam nhieu bai tj.p, vi chi co khi lam bai ~P, ta quen cha nao thi Se gio sach de h9e thul)c l~ ch5 d6. Ta ciing khong ek pb.ai h9c thu9c qua

ki,

ma ds rut ngin

thoi gian va lugng kien thu:e h9e thu9c, ta nen c6

m9t ehut

tu

duy, nhu l~p bang so sanh gifra cac chit, lien M cac chit cimg day df>ng ding, hoijc cung m9t nh6m trong bang tuAn hoan .... Tuy nhien, ck phai h9c thm)c ki nhiing kien thuc nhu: ten cac quijng VO ca, cac ch§.t hfru ca hay dung va ten g9i thong thuong ...

vong cuon sach se giup ich duoc rnoi ngiroi va diroc moi nguoi don nhan.

Xin chan trong va than ai

cam 'on! ,

^{>.: • \, ' : ·"'}

Ph,m Thi Trang Nhung - C\fu hqc sinh chuyen Toan-THPT chuyen Ltrong Van

Tl}.y-

Ninh Binh

Sinh

vien

DH Y Ha

N9i

(27,5

d:i~m

2 k.h6i

Ava

B)

Cac em than

mSn! -

Khi

c~m tren tay quySn sach nay

chic chful cac em

dang d&n hSt sue

^minh

dS chufui bi

cho ki thi THPT

qu6c

gia v6i

biSt

bao ki v9ng,

quy~t tam

^va

ciing khong

it lo l~ng,

m~t

m6i.

Chuc

cac

em

h9c tf>t

va

se

d~t

dugc

kSt

qua

t6t nh§t trong kl

thi

sip t&i.

Khong biSt cac em c6 ai nghi nhu chi truoc kia: 3 nam h9c

cAp

3

vit va

v&i bao

nhieu

ki~n thfrc

ma

chi

thi

trong

vong

2 ngay

va

sau

d6

se

khong

sfr dl,lilg

d@n

nfra.

D6 Ia

di~u chi

h6i tiSc nhit khi

buoc vao ki

thi THPT qu5c gia. Nhung

horn nay, khi & day

dS

viSt

nhung lai

tam

SlJ nay drulh cho cac

em

chi da

khong con phai hf>i tiic nhu

tnroc nfra. Thay

vao d6

la

ni~m

vui, vinh d\f va h~ phuc. Cac tac gia d~n tir khip

noi tren ca

nu6c,

nen

chic chiin

se dem dSn

cho cac em cac ki nang

va

kinh nghi~ da d~g, phong phu va hi~u

qua.

Tuy

nhien khac

v6i cac quy~n sach

on

thi d~i hQC khac, tac

gia ua

^{t~p sach}

dSu la

sinh vien

va hiu hSt clay Ia lfut

d&u tien

viSt sach.Vi thS khong tranh kn6i ifhiing-

~

n(li dung

va hinh thuc. Nh g cac

e,fe,

ch&i

rfulg,

nBu th\Tc hi~n

t6t

vi~c nay thi

kiSn

thuc

Hoa hQC hay cac mon khac dSu dugc

cai

thi?n ro

r~t ... va

cac chi

tiit chu y ma giao vien tren lap giang

, cac

em nen

ghi

vao m{>t cu6n s6

tay

va

hay

thucmg

xuyen

mo

n6 ra xem

nhe. Con vs phdn

tinh toan, cac

em

hay

ren luy~n phucmg phap

tinh nh§m,

tinh nhanh

nhu bao toan

electron,

bao toan nguyen

t6,

bao toan

kh5i

luQng

hay

so

db

cheo. N6

se

giiip

cac

em

ti8t ki~m

duqc nhiSu

thoi

gian

khi

lam bai

ma

l~i

tit chinh

xac. Ngoai ra

cac

em dn luy~n ~P th~t

nhieu bai

t~p trong cac dS

thi

^ct~ nfun ctugc tit ca cac

d~ng

bai t~p hay,

kh6

va

d~ con

tranh duqc cac bly trong khi lam bai Hoa.

Lap 12, cac

em

se kha

vtt va v&i

cac ki thi tri6n

mien, cac mon

h9c

tren

16p,

ciing

nhu lei

thi t6t nghi~p,

v~y

nen

cac em

phai

bi~t

s~p x~p thai gian

hqp Ii d~ h9c t~p

th~t

t6t. Ml)t

cau

hoi d~t

ra cho

cac

em luc

nay la nen ch9n

tai

Ii~u nao la hay, la d~c sAc

de

^tisn

b9 nhanh

^nhit?

Thoi

gian

hQC trung hQC

ph3 thong

la

mQt quang thai

gian d~p

cu.a tubi

tre, hay

s6ng hBt minh va hoan

thanh

trach nhi~m cu.a cua minh nhe.

Chuc cac em thanh cong!

-·---

VI

Cao Die Tuin - C11u

hoc sinh chuyen Toan -

THPT

chuyen

Vinh

Phuc-

Sinh vien DH Y Ha

N(>i

(27,5

di~m 2 kh6i Ava B)

Cac em

than

men,

M9t bai thi dat

kSt qua

^{cao yeu}

du

cac em cdn c6

m(>t v6n kiSn

thirc

t6t v~ mon

Hoa, li thuy8t vfrng chic

va

tinh toan

nhanh

gQn, chinh xac. T.it nhien,

dS

c6 dugc

diSu

d6, cac em phai

Iuon n6

l1Jc hSt minh, diu

tu

thoi

gian va cong

SU'C

dS

^11cay".

V~

kinh nghi~m cua ban

than anh,

mu3n

h9c

tf>t Ii

thuySt thi cac em phai h9c th~t Id sach giao

khoa,

ngoai

ra

Ia cac lo~i

sach tham khao,

cac chu8i

phan

ung b6a h9c, cha nao quan trQng, em c6

thB

^g~ch

chan

bing but

mau ... v&i mc3i m9t phful,

cac

em

nen

M th6ng

Ii thuySt bfulg "sa d6 tu duy11 mqt

cong

cµ hfru

hi~u ma ca

thi gioi

da

cong

ru$1. Anh

chic

DB c6 the dat duce di€m

s6

cao trong ky thi THPT

qu6c

gia, d6 la mdi quan

tam chung

cua nhieu cac

ban

^hQC sinh hi~n nay.

Ngoai

gio

hoc

tren lap, cac ban

nit

mong muon luyen ~P cac

kiSn

thirc da dtroc hoc vao bai t~p

d6 lam,

nhung th~t kho

de

tim diroc

m{>t bQ d8

hay,

phu hop, nrong ximg

nhu

m{>t de

thi dai hoc

d6 lam

ciing

nhtr

c6

thS

tham khao nhimg

Im giai

hay

va di;ic sAc, nhtrng chi dfui, goi mo nhtrng

vfui

d~ kh6

hi~u, virong

mic

tren thi tnrong sach hi~n nay.

Hom

nay, toi

nit

han hanh

va

vui mung diroc gioi thieu voi cac ban

b9

sach tuy~n

chon

nhttng d~ thi thir dai hoc

voi Ioi

giai

s~n va

sµ bien t~p

ti

mi cua mot

d(li

ngU

hung

Mu cac thu khoa,

a

khoa,

cac

ben da dat kSt

qua

cao trong ki thi tuyen sinh dai hoc,

Trong cu5n sach nay,

cac ban

se

tirn

diroc cho

minh nhtmg

cau

h6i

hay, thu vi,

nhtmg

dap

an sang tao, ngan gen, nhfrng

tu duy

d<}c dao giup

ren

luyen

va

b5 sung nhtmg

phirong phap moi giup ban dat

kSt qua tAt

nhJt trong ky

thi

THPT quoc gia

s~p toi, Cuon sach nay la tam huyet cua ca d{>i ngti

cac thu khoa va

a

khoa dai hoc cao

ding

danh cho tit ca cac ban hoc sinh

dp

3, d~c biet cac ban hoc sinh dang chuan bi

cho

ky thi THPT qu6c gia tren toan

quoc

voi uoc mong mang

d8n

tai li~u

on

^{t~p tbt}

nhllt

cho

tilt ca

cac ban hoc sinh. E>ay ciing c6 th~

tro

thanh

m<)t tai li~u htru

ich cho

cac thAy co

^giao

cac b9 mon

trong

qua trinh giang

day

mon hoc, Hom

nay,

toi r§.t vui

diroc gi6i

thieu cu3n sach diu tien trong b(:, sach toi tit ca cac ban. 06 la

cuon:

"B9 d6

tinh tuy on thi THPT

qu&c

gia men H6a". Rit hi

vong CU6n sach Se la trai nghiem thu Y!

^{cho ban}

dQC.

VII

Con vs

phuong phap h9c, nhUng lai tam sµ

cua cac thanh

Vien nh6m

bien

SOc}.Il d~u

la

nhfrng gqi "j

cit

quy

bau

va b6 ich

trong

each

h9c

cho

cac b~n. minh

chi xin

chia

se

them

m{,t

chut

kinh

nghi~m

ban than trong vi~c nim vung

Ii

thuyk Nhi~u b"1n cho ring mon Hoa c6 nhi~u If thuySt dn

h9c

thu9c va

chua tim dugc each ghi nho chung nhung

minh

khong

nghl

v~y.Truoc

tien chung

ta

cful

khai

thac

tri~t

d~

va barn sat sach giao

khoa. Sau

do, cac bc;in nen n;r t?o cho ban than nhfrng "m~o" rieng d~ h9c

bai.

Vi d1,1

nhu

ban than minh khi

h9c v~

bai

Crom ban diu

ciing hay nh!m mau sic cua hai dung

dich

K2Cr

²

0

⁷

va K

²

Cr0

⁴

nhung minh

ti,r

d?t ra

"quy lu~t":

K

²

Cr

²

0

⁷ c6

2 nguySn tu Cr trong phan

tu

tuang ung v&i s6 nhi@u nghia la _mau dung

dich

d~m

hon (dung dich c6

mau

da cam)

va

K2Cr04 c6 1

nguyen

tu

Cr trong phan

tir tuong

ung

vm

s6

^{it nghla}

la mau dung dich nh:;tt hon ( dung

dich c6

mau vang).

C6

thS

"quy lu~t" nay khong dugc ai

cong

nh~n hay

chung

minh nhung n6

se giup b~

^nh&

bai m9t each

nhanh

chong ma khong

nhk

I~n de lAy diSm nhung

cau li thuy~t trong dS thi. Ngoai ra, khong chi hQc trong sach

va ma

cac b~ con c6

thS

^hQC qua nhfmg phuong ti~n truy~n

thong

khac ma ph3

bi~n

nhit la

ti

vi. C6 nhfrng bai b5

trg kiSn thuc

du chi 30 phut cua cac

thiy

nhung da

giup

ich

minh

rit

nhiSu

trong

viec ti~p

~n

nhung

kic§n

thuc ma co

th~

con

chua h9c

dSn a

tren lop. Minh thm::mg

xuyen

xem nhung

bai

^hQC ma

khong ~y theo

phong each tren

lop gifra co va

tro,

chi

don

gian la m9t bai

h9c

gi6i thi~u ciic

hi?n tm;mg trong

thi nghiem

H6a h9c

thoi

ciing rfit thu

vi va b3 ich,

n6 giup

ich

cho ph§n nh~ bi~t, ta.ch chftt

cit nhi~u!

Do la nhfrng

chia

se minh muf>n girl dSn cac b~n.

M3i ngucri

c6 mqt each h9c khac nhau vi v~y

minh

chuc

cac bc}.Il tirn

ra phuong

phap

h9c

phu hqp nhAt voi minh dS

^hQC

·tbt mon Hoa hc;>c n6i rieng va cac

man khac

n6i

chung. Chuc cac b?Il c6

m9t

nam h9c

thanh Cong Va Som d~t dugc UO'C mo

CUa

minh!

B6

Thi Hi~n- Sinh

vien

DH NgoJi Thuong Ha

Nqi

(Hoa trang nguyen truong

THPT

Nguy~n

Sieu nam 2012)

Theo minh, mu6n

hoc t6t

mon

H6a

c§n

phai hoc hieu, khong phai hoc thuoc

long may moo

cac cong tlnrc hay Ii thuy~t vi v~y tnroc tien cac ban phai yeu thich

mon

H6a vi khi d6 cac ban se

cam thAy

thu

vi

khi biSt duce

m9t ki8n

thtrc moi

va

ghi nho m(>t

each

d~ dang. Ching

han khi tlm hieu vS

nhirng thi

nghiem vui co hien nrong thu vi ban se biSt nhfrng

plnrong trinh h6a hoc

ma

sach giao khoa khong d~.

c~p

toi.

Vi d1,1 khi trQn

KMn04

v6i H

²S04 ~

d~c:

H2S04

+

^{2KMn04 ~ K2S04}

+

2HMn04,

du6i tac dpng cua H2S04 d?ID d~c HMn04

mAt nuoc

t?o Mn2 07

la

chdt oxi h6a cµc ki

m~nh lam b6c chay nhisu

chit huu

co

khi

tiSp

xuc Ia tmg dµng cho

tro ao

thu~t "Cham

nSn khong cin lira".

Truong Dinh Dll'c -

Cmr

h9c sinh

chuyen Toan- THPT chuyen

Phan

Bf}i Chau ~ Ngh~ An -

Sinh

vien

DH Y Ha N~i (28

ctiim

kh6i A, 29

diim

kh6i

B)

Minh r§.t vui

khi

duce g6p m<)t phftn nho vao viec hoan thanh ~p sach nay' day

la

tam huy€t cua

toan

bQ cac anh

chi

trong Gia dinh Lovebook. Ki thi THPT

qu6c gia la mot

trong nhtmg kl

thi quan

trong nh!t

trong

^CUQC doi Vi

do la

nhtmg COil dirong quy~t

dinh chu y€u vi~c cac ban se lam nghe gi trong

tuong lai. Tuy v~y. cac ban cfing khong nen qua cang thing voi n6, chi c!n co each hoc, xay dung chien hroc

t6t

va

mc;,t

quyet

tam

^thepl

Va

^{rninh hi}

vong r~ng ~p sach nay Se g6p IDQt phftn vao di~u

d6. CMc cac ban d3 vao nhftng tnrong

ma

^{cac ban}

mo uoc!

gang va quy~t

tam nit

^nhieu

di

co

th8 gm

d~n cac em b9 sach

m9t

each

t6t

nh!t, hoan thien nh§.t. C6 nhimg dem thirc trang, c6 nhirng ngay quen

an,

^c6

nhtrng luc m~t moi,

Va

CO

ca

nhtrng hie

th~t

su nan long.

Tung lai

giai, tung trang sach khong chi

la nhfrng ki@n thirc, lei nang

ma con

la

tinh cam, tam

huyet cua tdt ca cac anh chi danh cho cac em. Hi

vong quyen sach

nay CO th~

giup cac em hoc ~p,

on thi dS dang va hieu qua hon. Mong m(>t

ngay

khong

xa

se

duce hop

tac cung cac

em, khi d6

da la cac tan

sinh vien Dai hoc d8 vi~t

ti~p

cac b9 sach khac, ti~p

tuc giup

da, h& tro cac

th€ M sau

nay.

VIII

1Trong phan U'Ilg oxi h6a·khtr thl chat khu- nhueng electron va chat oxi h6a nh~n electron.

2 Kim loat Gali c6 so hi~u nguyen

nr

la 31 Ia kim 109-i trong sudt khdng mau, 0 dieu ki~n thuong, Gali c6

the

^{tan chay}

trong m{>t ban tay, lam tieu buy thiiy tinh, kim loal nhung hoan toan than thien v61 con ngu'ir.i.

3 Cac este thirong co mui hirong d~ chiu nen mot so este dU'(}'C {rng dung trong San xuat IlU'CYC hoa.

4 Voi song (CaO) dtrQ'C dieu che tir da voi (CaC03) theo phan img: CaC03 ~ CaO + C02•

5 Hi~n nrong phat quang trong bong toi ciia photpho trang goi la "ma troi",

6 Khi dung than SU'oi am khong nen dong kfn phong do:

Ban dau, C chay trong 02 theo phan img: C + 02 -+ C02

Sau d6, do thieu oxi nen: C

+

C02 ~ 2CO, CO la khf c6 the tao phU'c v&i. hemoglobin trong mau.-can tea qua trlnh v~n chuydn oxi trong mau gay ngat th& va c6 the dan den tu vong.

B6 ThjHi~n Hoc boa ch~ng kh6 ban oi,

Li thuyet

nAm

vfhig co

noi cAn

dung.

Quy

Iu~t dung

^nho

lung tung, Phai hi~u sau sic khi dung moi hay.

H9c h6a cAn c6 me say, Chiu kh6 tim hieu horn nay di nao !

Oxi hoa-khu la sao?

Khir cho o nh?n

¹

nho vao diu ngay.

Kim Ioai tan chay tren tay,

La

Gali

²

nhe,

th~y

hay-khac thirong!

Este luon c6 mui huong

^3,

Niroc hoa n6i ti~ng b3n phuong tin dung.

Voi s5ng

^{nho phan}

(mg nung",

Da voi khai thac nhieu vung nu6c ta.

Doi

khi nrong c6 g~p ma,

Ma dau hay bi~t d6 la photpho

^5•

Mua dong

^du

co co ro, Dung than stroi fun dung cho kin nha".

H9c

dau

chi kiSn thirc

ma Toge hanh thuc t~ nhieu diBu nh6 Iau,

B~

ai

dung c6 lo au, Cham chi ren Iuyen nho cau kien tri.

Chung toi Lovebook yeu thirong, Chuc ban lam t6t nhtmg gi muc tieu,

LOI KHUYEN HQC HOA

Hay cho biet hi~n tuong

quan

sat QUQ'C trong

ong

nghiem 2

la

A

Co

ket

tua

den cua PbS.

B.

Dung

dich chuyen sang mau vang do s tan vao

mroc,

C. Co

ket tua trang ciia PbS.

D.

Co ca

ket tua trang va dung dich vang xuat hi~n.

CAu 5: Phat bieu nao sau day

la

sai?

A Na2C03

la

nguyen li~u quan trong trong sin xuat thiiy tinh.

B. NH4HC03 la b9t n& va la thudc dung de chfra benh da day cho chung du axit

C.

Cho cac chat sau: Si, Ca C2, A4 C3 vao dung dich N aO H

deu

c6

khi

th oat ra.

D.

De

^bao quan kim loai

ldem

ngtrci ta ngam chung trong dau boa.

CAu 6: C6 the dieu che Ca bang each nao?

A

Bi~n

phan n6ng chay

CaCl2 •

B. Dung CO hoac H2

de khu

CaO & nhi~t d(> cao.

C. Nhi~t phan CaO

a

nhi~t

d9 rat

^cao.

D. Dung Na

de

day Ca ra kh6i

muoi

Ca Ch.

CAu 7: Thuy

phan hoan

toan tinh b9t trong dung dich axit VO CO' loang thu dll'l;rc chat hfru CCI x. Cho x phan ung v&i khi H2 (xt Ni, t0) thu duqc chat hiru CO' Y. Xac dinh X, Y

A. Glucozo, Sobitol. B. Glucozo, Saccarozo.

C. Glucozo, Etanol. D. Glucozo; Fructozo.

Cau

8: Thf

nghiem

nao

sau

day

kh.ang

xay

ra

phan ung

A. P+H2S04 d~c nong B. Cu+ Fe2(S04)3

C. FeS04 +HN03 loang D. Al+HN03 d~c ngu9i

Ciu 9: Cho chatX (C3H903N) tac dung vet dung dich NaOH dun n6ngthu dugc chatkhi

lam

xanh giayquy tim

am u61: va m{lt rnudi

VO CO'.

So cong thtrc cau

^!?O

cua x thoa man la

A 4 B. 1 C. 2 D. 3

Cau

10: Cho bQt Al vao trong dung dich KOH du, thay hi~n tuong

A. Sui bot khi, bgt Al khong tan het va thu duqc dung dich khong mau, B. Sui bot khi, bc;it Al tan dan den het va thu duqc dung dich mau xanh lam.

C. Sui bot khi, b9t Al khong tan het

va

thu dugc dung dich khong mau, D. Sui

bot

khl, bqt Al

tan dan den

het

va thu

^dU'9'C

dung dich khong mau,

Ciu 11: Cac ion rung ton tai trong

m9t

dung dich

la

A Ca2+, H2P04, N03, Na+

C. Fe2+, NOt, H+, Mg2+

2

lr s

Zn+

u

HCI -

--

au 3:

Cong thirc

don gian

nao

sau

day la cong

th(rc phan nr?

AC3H8N B.C2H60 C.CxHzx+1 D.C3H6Cl

Clu 4: Cho phan (mg giiia

hru

huynh v&i Hidro nhu

hinh

ve sau, trong d6 ong

nghiern

1 de tao ra

H2,

ong

nghiern

thrr 2

^dung

de nhan

biet

san

phdm trong

ong:

c.

³ D.4

B.2

A.1

Cau 1: Kim loai dan nhlet kern nhat

la

A Fe B.Ag C.Al D. Cu

Ciu 2: Neu thuy phan kh6ng hoan

toan

pentapeptit Gly-Ala-Gly-Ala-Gly thi thu duqc toi da bao

nhieu

di pep tit

khac

nhau

£le s61

Your draams e- Our mission BQ de tinh tuy on thi THPT quoc gia mon Hoa

LOVEBOOK.VN I 14

C.5,6%

B.25%

A.8%

Ciu 22: Day nao sau day gom cac polime c6

cau

true mach phan nhanh?

A Cao su Buna-S, xenlulozo, PS B. Amilopectin, glicogen

C. Nhira rezol, cao su luu h6a D. TO' nilon-6,6; ta Iapsan, ta olon CA.u 23: Phat bieu nao duoi day la khong dung?

A. Co the phan bi~t da th~t va da gia (lam hr PVC) bang each dot chay va hap thu san phdrn chay vao dung dich AgN03/HN03•

B. C6 the phan bi~t tripeptit (Ala-Gly-Val) va long trang tnmg bang

phan

^ung mau v&i Cu(OH)2•

C. C6

the

phan bi~t benzen, anilin, glucoza bang dung djch mr&c brom.

D. C6

the

phan bi~t dau

ma

dQng thi.rc v~t va dau

ma

^boi tran may bang dung djch kiem.

ca.u 24: Nhi~t phan

hoan

toan 80g m{Jt lo~i QU?ng dolomit c6 Ian ~p chat tra, hoa tan chat ran vao

mx&c

du thay con l?i 22,4 gam chat ran khong tan. Thanh phan %

ve

khoi luc;rng cua ~p ·chat trong lo?i qu~ng neu tren

Ia

D.1

Cau 19:

C6 cac phat

bieu

sau:

(1) Tat ca cac kim loai kiem

tho

deu tan VO han trong IlU'O'C

(2) Cac kim loai kiem

co the

day cac kim Ioai yeu hon ra khoi dung dich mudi, (3) Na", Mg2+, Al3+ c6 cung

cau

hinh electron

va

^deu

co

tinh oxi hoa yeu.

( 4) Kim loai kiem dU'Q'C dung nhteu trong tong hop hiru CO'.

(5) Cho dung dich NaOH du vao dung dich AlC13, sau phan tmg thu dugc dung dlch trong suck Nhfrng phat

bieu dung la

A (3), ( 4), (5) B. (3), (5)

C.

(1), (2), (5) D. (1), (3), ( 4) Ciu 20: C6 the phan bi~t HCOOCH3 va CH3 COOCH3 bang

A Na B. AgN03/NH3 C. CaC03 D. NaOH

Ciu 21: Cho cac phan img sau :

1. Nhiet phan Cu(N03)2 2. f)i~n phan dung dich H2S04

3. Di~n phan dung dich CuCl2 4. C6H5NH2

+

HN02 So phan frng

ma

san phdm tao ra c6 02 la

A4 R3 C2

B.

f>ieu

che Cl

^2,

HCI,

^mroc Javen.

D. Lam dich truysn trong y t~.

D. Saccarozo

D. HCl va

NaOH

Cau 15: De

chirng minh glyxin

Ia

mQt amino axit , chi can

cho

phan (mg v&i

A NaOH B. HCl C. CH30H/HCl

Ciu 16: Nhan xet

nae

sau day dung

A Nhom kim loai khong tac dung v&i TIU'O'C do

the

di~n Cl!C chuan cua nhom l&n hem cua mroc, B. Trong phan frng cua nhorn v&i dung dich NaOH thi NaOH

la

chat oxi h6a.

C. Do co' tinh khu manh Al tac dung v&i cac axit HCl, HN03, H2S04 trong moi dieu ki~n.

D. Cac v~t dung Mng nhom khong bi oxi h6a va khong tan trong mnrc do c6 lop mang oxit bao v~.

Cau 17: Chat nao sau day

kh6ng

lam mat mau dung df ch Brom

A.

^GIUCOZO' B. Mantozo

c.

Metyl acrylat

<:Au 18: Cong dung

nao

sau day kh6ng phai cua NaCl?

A.

Lam

gia

Y! . c.

Khtr chua cho dat.

ca.u 12: Bot chay hop chat mudi Clorua ciia kim loai M tren ngon lira VO s~c thay ngon h}a co mau tfrn hong.

Xac dinh

muoi

Clorua cua kim loai M.

A KCI B.

NaCl

C. BaCh D. CaCh

Cau 13: Phat bieu nao sau day

la

dung?

A Anilin tac dung voi HN02 khi dun n6ng thu dll'Q'C muoi diazoni.

B. Tat

ca

cac arnin deu

la

cac chat khi co mui khai, d(k va

de

tan trong mroc.

C. Etylamin phan ung

wi

^HN 0² & nhi~t de) thuong sinh ra bot khi.

D. Anilin la chat long rnau den kh6 tan trong nuoc,

Ciu 14: Duong la 1 loai gia

Y!

khong the thieu trong nha hep. Khl san xuat ngu'cri ta dung chat nao de tay t:rang duong

an

^?

A

co

^{2 B.}

so, c. so,

^D.

c

· -Your-dreams - Our mission 8Q de tin h tGy on thi THPT qul,c gia mon Hoa

LOVEBOOK.VN I 15

I

±._·• ..:.:.;:.:,2:::-~·: ... c,.. :---~- ·-• .'."'.':"': ~-:--,,·)~"r~~-~~··.·::-: ::-: ··

Cau 25: Cho cac chat: KHC03, NaHS04, A}z03, NO, HI, Crz03, Clz, NH4N03.

So

chat tac dung v&i dung dich NaOH

& nhlet dQ thuong

la

A. 4 B. 5 C. 6 D. 7

Cau 26: Cho 4 IQ h6a chat bj mat nhan d9"ng 4 dung dich trong sudt, khong mau chua mot trong cac hoa chat rieng bi~t: NaOH, H2S04, HCI va NaCl. f)e nhan biet nrng chat c6 trong rung 19 dung dich can ft nhat so h6a chat la

A. O B. 1 C. 3 D. 2

Cau 27: Ba chat hfru CO' A, B, D c6

khoi

hrong phan tir tang dan, Lay cung so mol m6i chat cho tac dung het v&i dung dich AgN03/NH3 deu thu dugc Ag va 2

rnudi

X, Y. Biet rang

- Luong Ag sinh ra tu A gap hat Ian hrong Ag sinh ra tir B ho~c D

- Muoi

X

tac

dung v6i dung dich NaOH giai ph6ng khf

vo

^CO'

- Muoi Ytac dung

vet dung

dich

NaOH

hoac H

2

S0

⁴ deu

tao khl

vd ca.

BachatA,B,Dlanluqtla

A HCHO, HCOOH, HCOONH4 B. HCHO, CH3CHO, C2H5CHO

C. HCHO, HCOOH, HCOOCH3 D. HCHO, CH3CHO, HCOOCH3

cau

28: Truong hop

nao

du&i day h6n hop chat ran

kb.ang

bi

hoa

tan het (gia thiet

cac phan

img

xay ra hoan

toan)

A Cho hon h9'P chira 0,1 mol Mg va 0,1 mol Zn vao dung dich chrra 0,5 mol HCl.

B. Cho h6n hop chira 0,1 mol Fe203 va 0,1 mol Cu vao dung dich HCI du.

C. Cho h6n h9'P chtra 0,1 mol

Cuva

0,1 mol Ag vao dung dlch HN03 d~c chua 0,5 mol HN03.

D. Cho hon hop chira 0,15 mol K

va

0,1 mol Al vao nuoc,

Cau 29:

Lay

5,2 gam

hon

hop FeS2 va Cu2S tac dung hoan toan v&i dung dich HN03 thi thu dU'Q'C dung dich chi chira 2 mudi

nitratva

12,208 lit h5n hop N02

va

502 (dktc).

Xac

dinh %

ve khoi

hrong cua FeS2 trong hon b9'P ban dau

A. 93,23% B. 71,53% C. 69,23% D. 81,39%

Cau 30: Bi~n phan dung dich AgN03 voi cac di~n Cl!C tro. Thoi gian di~n phan la 15 phut thu du-qc 0,432 gam Ag

a

^catot Sau d6, de ket tua het ion bac

con

lai trong dung dich sau di~n phan,

can

dung 25ml dung dich NaCl 0,4M.

Khoi

^lugngAgN03 trong dung dich ban

dau

^la

A 2, 38 gam B. 2,83 gam C. 4,76 gam D.1,19 gam

C~u 31:

Cho 0,1 mol amino axit X tac dung vira

du

v&i O,lmol HCI thu dU'Q'C mudi Y. 0,1 mol muoi Y phan frng

vtra du v&i

0,3 mol NaOH thu dtrQ'C

h6n

h9'P

mudl

Z c6 khdi

luong la

24, 95 gam. V?Y cong

thuc

cua X

la

A H2N - C3H5(COOH)2 B. H2N - C2H3(COOH)z

C.

(H2N)zC3H5 - COOH D. H2N -C2H4-COOH

CJ.u 32: Cho 20 gam hon h9'P 3 amin no, don chuc la dong dang

lien

^tiep

cua

nhau tac dung vira du v&i dung dlch HCI, co can duNg dich thu dtrgc 31,68 ga_m

hon

hop mudt Neu 3 amin tren dU'Q'C tr(>n theo ti I~ mol 1 :10 :5

Va

thfr tt,r

phan

^tir

khoi tang dan

thi

cong thirc phan

^tir

cua 3 amln la

A. C2H7N,C3H9N, C4H11N B. C3H9N, C4H11N,C5H13N C. C3H7N, C3H9N,C5H11N D.CH5N,C2H7N, C3H9N

Ciu 33: Dun n6ng hon

hQ'P

xenlulozo v&i HN0³ d~c va xiic tac H2S0⁴ d~c, thu dm;rc h6n hop san

pham gom

2 chat hiru CO' c6 so mol bang nhau, ti I~ khoi IU'Q'ng ciia N trong

hon

hop bang 9,15%. Cong thirc ctia 2 chat trong

hlm

h9'P

san

pham

la

A. [C6H102(0H)3Jn, [C6H102(0H)20N02Jn

B.

[C6H102(0H)zON02Jn, [C6H1020H(ON02)2ln C. [C6H1020H(ON02)2Jn, [C6H102(0N02hJn D. [C6H102(0H)zN03Jn, [C5H102(0N02)3Jn

Cau 34: Khi thuy phan khong hoan toan mQt peptit X (Mx

=

^{293) thu dU'Q'C} hai peptit Y va Z. Biet 0,4 72 gam Y phan irng

wa

du v&i 18 ml dung djch HCI 0,222 M dun n6ng

va

0,666 gam Z

phan

ung vira du v&i 14,7 ml dung dich NaOH 1,6% (d = 1,022 gam/ml) dun n6ng. Biet

rangkhi

thuy

phan

hoan toanX thu du(!C

hon

hgp 3 amino axit

la

^{glyxin, alanin}

va

phenyl alanin.

Cong

thfrc

cau

~o ctia X

la

A Ala-Phe-Gly. B. Gly-Phe-Ala-Gly. C. Ala-Phe-Gly-Ala. D. Gly- Ala-Phe.

Cau 35: Khi thuy phan hoan toan 0,25 mol peptit X m~ch her (X ~o anH tir cac -amino axit c6 m9t nh6m - NH2 va

m9t

nh6m -COOH)

bang

dung dfch KOH (dU' 15% so v&i lugng ch P.han (rng), co qm dung dich thu dm;rc h6n hgp chat

ran

tang so v&i kh5i hrgng X la 253,1 gam.

So

^lien ket eptit trong X

la

Your dreams- Our mj~~ion Bij de ti nh tuy on thi THPT gubc gla mon Hoa

LOVEBOOK.VN I 16

au 36: Thuy phan hoan toan 4,84 gam este A bang m<}t lll'gng dung dich NaOH vira du, roi co can chi thu dugc hoi mr&c va hon hop x gom hai rnudi. Dot chay hoan toan luong

rnudi

tren can dung 6,496 lit 02 (dktc), thu duoc 4,24 gam Na2C03; 5,376 lit C02 {dktc) va 1,8 gam H20. Thanh phan phan

tram

khoi hrong mudi

co

khoi luqng phan tu' nho hon trong

x la

A 27,46%. B. 37,16%.

C.

36,61 %. D. 63,39%.

C~u 37: Hoa tan 6,85 gam m9t kim loai Idem

tho

M vao 100 garn nuoc thu dugc 100 ml dung dlch A ( d

=

1,0675 gam/ml). Dot chay 0,92 gam chat hfru CO' x thu dU'Q'C C02 va 0,72 gam nuoc, Cho toan bQ hrong C02 thu duo'c vao 100 ml dung dich A tren, thu duqc 5,91 gam ket nia. Biet cac phan trng xay ra hoan toan, cong thirc phan tu'

cua x la

A (3Hs02. B; C1Hs. C. (4Hs03. D. C6H6

Ciu 38: Dot chay hoan toan 5,52 gam chat X thu duqc h6n hop khi va hot A gom C02, HCJ, H20 va N2. Cho mqt phan A di cham qua dung djch Ca(OH)2 du thay c6 6,0 gam ket tua va khoi Iuong dung dich gtam 1,82 gam

va

c6 0,112 lft khf khong bi hap thu, Phan con lai cua A cho I(H cham qua dung dich AgN03 trong HNQ3 du thay khdi hrong dung dich giam 2,66 gam va co 5,74 gam ket tua, Biet cac phan img deu xay ra hoan toan. Phan tfr khoi X c6 gia tr!

gb nhft

v&i gia tr! nao sau day?

A 172,0 B. 188,0 C. 182,0 D. 175,5

Ciu 39 : X la

dung dich Ah(S04)3,

Y la

dung dich Ba(OH)2. Trdn 200ml dung dich X v&i 300ml dung dich Y thu duqc 8,55 gam ket tua, Trqn 200ml dung djch X v&i SOOml dung dich Y thu duoc 12,045 gam ket tua, Nong

d9

mol/1 cua dung dich

x la

A 0,075M B. O,lOOM C. 0.150M D. O.OSOM

Clu 40: Hoa tan 11,6 gam

hon

hop A gom Fe

va

Cu vao 87,5 gam dung dich HN03 50,4%, sau khi kim loai tan het thu duoc dung dich X va V lit (dktc) hon hop khi B (gom hai chat khi

co

^{ti l~ so mol 3:2).} Cho 500 ml dung dich KOH lM vao dung dich X thu duo'c ket tua Y va dung dich Z. LQC

lay

^Y

roi

nung trong khong khi den khoi hrong khong doi thu dll'9'C 16,0 gam chat ran. Co C.;J.O dung djch Z duoc chat ran T. Nung T den khoi luong khong doi thu dl.t'Q'C 41,05 gam chat ran. Biet cac phan img xay ra hoan roan, Nang d9 % cua Fe(N03)3 trong

x u

A 13,56%

B.

20,20%

C.

40,69%. D.12,20%

D.9.

C.16.

B.15.

A10.

Vouf dreams - Our mission B{I d~ tinh toy on thl THPT qu6r gla mon Hoa

Al (ngoai ra con c6 Fe,Cr) khong phan (rng v&i. HN03

d~cngu9i.

2P + SH2S04d~cn6ng ~ SS02 + 2H3P04 + 2H20 3FeS04 +4HN03--+ Fei(S04)3 + Fe(N03)3 +NO+ 2H20 Cu+ Fei(S04)3--+ CuS04 + 2FeS04

CA.u9: ChQnC

Cac cong thirc cau tao cua X th6a man: CH3CH2NH3HC03,

(CH3)2NH2HC03.

Cau 10: Chon D

2Al+2KOH+2HP-> ZKA.102 +3H2 CA.u 11: ChqnA

Cac ion muon cung ton tai trong mi)t dung djch thl cac ion d6 khong the phan trng v&i nhau. Tir d6 suy ra dap an A gom cic ion ton ~i trong mi)t dung djch. Cac dap an khac la saivi:

B: HC0

3

+OH--+ Coi- + H20

C: 3Fe2+ + N0

3

+ 4H+ -+ 3Fe3+ + NO + 2H20 D: 2Fe3+ + 21--+ 2Fe2+ + 12

Cau12: ChqnA CAu 13: Chqn C

k Anilin tac d!Jng v&i. HN02 ct nhiijt d9 0 - S°C t?o much diazonL

B: Benzen khong lam mat mau IlU'O'C brom ma chi phan ung v&i hoi brom.

D: Cac ancol da chfrc c6 cac nh6m -OH ke nhau thl phan frng v61 Cu(OH)2 ~o dung djch mau xanh lam.

Chu y:

Cac amin bjc 1 khi tac d1,mg v6i dung dfch HN02 6' nhi?t d{i thu-img sinh ra khf khong mau la N2.

CA.u 14: Chqn B

Ngoai tay trang ducmg an ngucri. ta con dung S02 de tay di cac vet am mac & cac tam chieu hay sgi vai...

CAu 15: ChQn D

Khi cho Glyxin (C2H502N) phan U'tlg v&i HCl chfrng to co nh6m -NH2, phan Crng v61 N aO H ch frng t6 c6 nh6m -COOH.

Clu 16: ChQn D

A: Nhom c6 the kh{r dugc nl.l'ac, giai ph6ng H2• Tuy nhien phan frng nhanh ch6ng dirng l;;li vi lap mang Al(OHh khong tan trong mr&c da ngan can khong cho Al tiep xuc VOO IlU'O'C.

B: H2 0

la

chat oxi h6a.

C: Al th1,1 dqng h6a trong dung dfch HN03 d;jc nguqi va H2S04 d~c ngu9i.

CA.u 17: ChQn D CA.u 1: Chon A

Tinh dJ.n nhi~t cua cac kim 109-i giarn theo thfr ti! Ag, Cu, Al, Zn, Fe, ...

Cau2:ChQnB

Cac dipeptit khac nhau thu dtrgc: Gly - Ala, Ala - Gly.

Cau3:ChQnB

Chu y: Vin

hidrocacbon vi c6 cong thtic phan tr} tong quit CnH2n+2-2k nen

so

nguyen tu' H Iuon

la so

^chan.

Clu 4: Chon A

Vi ong nghiem 2 c6 phan irng gifra H2S va Pb(N0³⁾² nen tai ong nghiern 2 xuat hi~n ket tua den PbS.

CiuS:ChQnB

Trang da day c6 chira dung dich axit HCI. Nguot b] dau da day la ngucri. c6 nong di) dung dich HCI cao lam da day bf bao mon, NaHC03 dung de lam thudc ttj dau da day vi n6 lam giam ham lueng dung dich HCl c6 trong da day nho phan img Ma hoc :

NaHC03 + HCl ~NaCl+ C02 + H20

Ngoai ra chung ta c6 the biet them Na2C03 la nguyen Ji~u de San xuat thuy tinh vi n6 cung cap Nap cho thiiy tinh va c6 tac dung ha thap nhiet dQ khi nung va kht'.r bot cho qua trlnh san xuat

Chu y:

PTHH ma hoc siah thwng khong

nhu

la Si+2NaOH+HzO-+Na2Si0_,,+2H2t.

Cau6: ChQnA

f)e

dieu che cac kim 109-i kiem, kiem

tho

ta dung plnrong phap di~n phan n6ng chay.

Ta c6: CaCl2~Ca+Cl2

Chu y:

Cac pbtrong phap aieu che kim Ios!

1. Phuong phap thuy Juyfn: Dung kim Ioei msnh day kim Iosi yeu ra kiui! dung dich mudi. Thufrng dung trong phong th! nghifm de dieu che csc kim Ioei sau Mg

(thu'{}ng la kim Ioei yeu)

2. Plurong pbsp nhift luyfn: Dung chat khi} CO, C, Al, H2 klur osit kim losi d- nhift a{i cao. Thll'071g dung trong cong nghifp v6i kim loei sau Al.

3. Phuong phap di?n phsn:

a. tJifn phan n6ng chay: Dung dong t!ifn m{it chieu khu ion kim io?i trong chat difn Ji n6ng chay (mudi halogenua, osit; hidraxit). Dung de tlieu che tat ca cec ldm Ios! nhung thuimg dung vui kim Ioe! msnh: K, Na, Mg, Ca,

Bs

vs

^{Al. -}

b: Di?n phan dung dich: Dung dong difn m{it chieu kiur ion kim Iosi yeu trong dung didi mum ctla n6. Dung dieu che cic kim lo?i yeu.

Ciu7:ChQnA

(C6

8i

⁰05)n +nHP->nC6H1

p

⁶ (glucozo) Glucozo + H2 -s-Sobitol

eau8: ChQnD

HUONG DAN c1A1

1A 2B 3B

4A

SB 6A 7A 80 9C 100

11A 12A 13C 148 150 160 170 18C 19A 20B 21C 22B 238 24A 25C 268 27A 28C 29A 30A 31A 32A 338 34A 358 36B 378 38C 39A 40A

Your dreams - Our mission

EAPAN BQ de tin h tuy on thi THPT quoc -gia mon Hoa

i l l i j

j

I

- j 1

I

1 I

1 j

HzO { MgO - Ca(OH)2 + tap chat tro

Goi {ncaC03.MgC03 = a thl {184a

+

b = 80 ¢::>{a= 0,4

· m~P c:Mt tro

=

b 40a + b = 22,4 b

=

6,4 6,4

=> %mt'.!P chattro

=

^{80 .100% = 8%}

Cau 25: ChQn C Cac chat thoa man:

KHC03, NaHS04-, Al203, HI, Cl2

va

NH4N03• PTHH:

2KHC03 +2Na0H-). K2C03 + Na2C03 +2H20 NaHS04 +NaOH~Na2S04 +H20

Al203 + 2NaOH ~ 2NaAI02 + H20 HI+NaOH~NaI+Hp

Cl2 + 2NaOH ~NaCl+ NaCIO + Hp NH4N03 + NaOH ~ NaN03 + NH3

+

Hp Ciu 26: ChQn B

Thuoc th{r duy nhat dung de nMn biet 4 dung dfch tren Ia dung djch Ba(HC03)2•

Ta co each nMn biet nhu- sau:

+) Khi cho Ian hrgt dung dfch Ba(HC03)2 vao cac m§u th{rthl:

- Mau th{r phan trng giai ph6ng khf la dung djch HCI:

Ba(HC03)2

+

2HC1 -+ BaC12

+

2C02 f +2H20 - Mh thir phan 11ng t,;i.o ket tua tclng la NaOH:

2NaOH + Ba(HC03)2 - Na2C03 + BaC03 ! +2H20 -Mau thfr phan U'Ilg t?o ket tua trang dong thcri giai phong khila:

Ba(HC03)2 + H2S04 - BaS04 .t. +2C02 t +2H20 -M§.u thii khong hi~n tU'Q'Ilg

la

dung dich NaCL

Chu

y:

V6i nhiing cau Mi d?ng hoi so lw;rng thuoc thtr can dung ft nhat ma de bai cho nhieu mau thr} kMen ban dau cac h{ln

kho

xac dfnh dll'(J'C thuoc thu

phu

h9P

va

ft nhat thi aau tien cac b9n nh#n biet nht.r d?ng nh?n biet khong dung thuoc tlu} ngoa1; vjn d1,mg toi da cac hifn tr.rvng de' nhJn biet cac mff u thir tnnfc, den khi het

kha

nang chung

ta mm· SU' d(Jng them thuoc thtr ngoai

de

^nhJn biet cic dung dfch con l;Ji.

CAu 27: ChQn A

Khi cac chat tham gia phan U'Ilg trang gu-crng thi luon thu dU'Q'C mu6i NH4N03, day la mu6i X.

Vl Y tac dl).ng v61 dung dich NaOH ho~c H2S04 deu ~o khi vo ccr nen Y

la

(NH4)2C03• Khi d6 A, B, D

la

andehit HCHO, HCOOH, ho~c HCOONH4-

Vi hrQ'Ilg Ag sinh ra tir A gap 2 Ian lll'gng Ag sinh ra tir B ho~c D nen A

la

HCHO, B va D

la

HCOOH

va

HCOONH4.

Cau 28: ChQn C

A: nHCI phan ung = 2nMg + 2ncu = 0,4 => c_hat ran bj boa tanhet

B: Fe203 + 6HCI·--+ 2FeCl³ + 3H²0 Cu

+

2FeCl3 -+ CuCl2

+

2FeCl2

C: Cu+ 4HN03 -+ Cu(N03)2

+

2N02 + 2H20 Ag+ 2HN03 - AgN03 + N02 + H20 f>e boa tan bet chat ran thi can

LOVEBOOK.VN I 18

f

Cao 80 am rCaC03. ~gC03 ~ M O g tap chat tre ta hg ...

· .Pc at tro

Dung dich NaCl c6 pH~ 7 nen kh6ng c6 tac dung kht'r chua cho dat (dat c6 [W]

>

[OW]).

CAu 19: ChQnA

(1) Kim Ioai Be khong tan trong IlU'O'C v&i moi dieu ki~n.

(2) Kim Ioai kiem khong the day dU'Q'C kim loai yeu hon ra khoi dung dlch mu6i. Kim loai kiem

se

phan img vO'i HzO tao thanh dung dich bazo, sau d6 dung dich bazo- mot tac dung voi dung dich mudi,

(3) Na+ ,Mg2+ ,AIS+ deu c6 chung

cau

hinh e la ls22s22p6

va deu

co

tinh oxi h6a y~u.

(4) Kim loai kiem dtrQ'C dung nhieu trong tong hop hiru

CO'.

(5) Cho dung dich NaOH du- vao dung djch AlCl3, sau phan frng thu clll'Q'C dung dich trong sudt,

PT: 40ff+Al3+-?A102·+2H20 Ciu 20: Chon B

Vi hai este nay khong tac dung v&i Na nen loai dap

an

A, con khi tac dung v&i CaC03. NaOH hai este dong thci cho cung 1 hi~n ttrong nen khong the phan bi~t diroc, Con khi 2 este nay tic dung v5:i AgN03/N~ thi este lam xuat hi~n ket tua trang xam (Ag)

la

HCOOC~, Este con lai

la

CH3COOCH3•

Ciu 21: Chon C

Cac phan irng thoa man: 1, 2 2Cu(N03)2 ~ 2Cu0+4N02 +02 (

1)

2H20~2H2+02 (2) CAu 22: ChQn B

A. Cao su Buna-S, xenlulozo, PS: mach thang B. Amilopectin, glicogen: mach phan nhanh,

C. Nhira rezol: mach thang; cao su luu h6a: mach khong gtan,

D. TO' nilon-6,6; to lapsan, to olon: mach thang.

Ciu 23: Chon B

A: Da gia dot chay sinh ra HCI, khi hap thu san pham chay vao dung dich AgN03/NH3 xuat hien ket tua trang la AgCI - Co the phan bi~t da that va da gia (lam tir PVC) bang each dot chay va hap thu san pham chay vao dung dich AgN03/HN03 la phat bieu fJUNG

B:

Ca

2 chat deu c6 phan U'Ilg mau biure-+ C6 the phan bi~t tripeptit (Ala-Gly-Val) va long trang tnrng bang phan ung mau vO'i Cu(OH)2

la

phat bieu SAi

C: Benzen: khdng phan tmg, anilin lam mat mau mroc brom dong thoi xuat hi~n ket nia, glUCOZO' lam mat mau mroc brom -+ C6 the phan bi~t benzen, anilin, glucozo bang dung dich mroc brom

la

phat bieu BmJG

D: Ma dqng v~t c6 phan (mg

xa

phong h6a, dau boi tron may (hidrocacbon) khong tan va khong phan frng v&i dung dich kiem -+

Co

the phan bi~t dau

ma

dqng thuc v,iit va dau m& boi tron may bang dung dich kiem la la phat bieuBUNG

Clu24:ChqnA

Your dreams-Our mission Bi;, de tlnh tuy on thi TH PT quoc gia man Hoa

LOVEBOOK.VN I 19 ONaOH

=

0,006mol---+ nz = o,003mol-? M2 = 222

X~glyxin + alanln + phenylalanin Taco:

Glyxin: H2NCH2COOH(M

=

75);

Alanin: H²NCH(CHJCOOH(M = 89);

Phenylalanin: C6H5CH2CH(NH2)COOH(M = 165)

Dung

may

tinh ta tfnh dU'Q'C B

va c

khong phai dap

an

do Mpeptit > 293 ---+ X la trtpepttt-» Y, Z la dipeptit

IlHCI = o,004mol-? DY= o,002mol---+ My= 236 ---+ aminoaxit elm lat = 293 - 236 = 57 (Glyxyl)

~ Gly dll'llg dau mach

....+ aminoaxit con lai = 71 (alanyl)

~ Ala dung dau mach Ciu 35: Chon B

D~t so lien ket peptit lax. Do de 40 lien ket peptit 2 don vj a-amino axit tach di 1 H20 nen c6 the quy doi:

ffiaminoa~t = ffipeptit + 0,25.18.x

IlKOH(phanirng) = 0,25.(x +1).(100% + 15%)

= 0,2875 (x + l)m01;

Ilnwi:: = IlKOH(ph.in irng) = 0,25.(x + 1) ffiaminoaxit + IDKOH = Inhcnhwnn + ffimrac

~ IDpeptit + 0,25.18.x + 0,2875 (X + 1).5 6

= ffipeptit + 253,l + 0,25.(x + 1).18 ~ X = 15 CAu 36: Chon B

-SO' do phan ung : {

H20 Este A( 4,84g) + NaO H -> X(2 m uoi)

Oz ,t0,(2)

X---+ Na2C03 (0,4mol) + C02(0,24mol) + H20(1,8g)

==>A la este cua phenol {

nNaOH = 2nNa2co3 == 0,08

+) m2mu6i = mcoz

+

ffiNa2COs

+

mHzocz) - moz = 7,32

{

mA + mNaOH = IDmu6i + 18ntt20(1)

+) Iltt(A) + IlNaOH = 2lltt20(1) + 2nHz0(2) -

==> filttzO(l) = 0,04

. l

Iltt{A)

=

0,2 {

nc(A) = IlNa2co3 + nco2 = 0,28 +) _ mA-mc-mH _ O

nocA} - t6 - ' 08 {nc:n":n0 = 7: 5: 2

==> A la (C1Hs02)n {

IlNaOH: Iltt20(1) = 2 +) kA = 9n+2

2

f

ⁿ

=

2, A la HCOOC6H4 - C6H400CH

==> 0,04.68

~ %HC00Na = ~ = 37,16%

CA.u 37: Chon B

mdungdjchsau

=

V.d = 100.1,0675

=

106,75gam;

Theo BTKL c6 :

ffitt2 tho>itra

=

6,85 + 100 -106,75 = O,lgam

~ n = O,osmot---+ Il!ciml~kiemth6

=

nH2

=

0,05mot ---+ Mkiml~kiemth6 = 137---+ Ba

nBaCQ3 = ^5•91 =0,03--+ BTNT Ba c6 197

nBa(HCQ3)2 = 0,05 - 0,03 = 0,02mo1 ---+ BTNT C c6 :

nC02 = 0,03 + 0,02.2= 0,07mo1 nH20 = 0,04moi

~IDoxi(neuoo)trongX= 0,92-0,07.12- 0,04.2 = 0 ....+ X la hidrocacbon c6 n, = 0,07 = '!...---? B

nH 0,04.2 8 CA.u 38: Chon C

ffidung d!ch giim = ffiket tua - lilnu6'c - fficacbonic - IDHCI ---+ mOOi +mllzO +mH0 =6-1,82=4,18P'";

n = 0,112 =0 005mo1

Ni 22,4 ¹ Vl Ca(OH)2 du-rien ta

eo

31,68- 20 _ 20

Ilh(\n hop amin = 36,5

=

0,32; Mamio = 0,32 = 62,5

=> CnH2n:+3N c6 n = 3,25

Nen h6n hop c6

the

gom cac amin c6

so

^nguyen ti'r C la 2, 3, 4 hoi:ic 3, 4, 5.

Thir chon dap

an

^dU'Q'C dap an A CAu33: ChqnB

GQi x la so nguyen ti'r N trung binh c6 trong san pham hfru

CO'.

Do d6 san pham hfru ca co dang [C6H7(0H)3-,,:(0N02)x]n Ttr ti 11$ khoi hrong

cua

^{N c6:}

14x

162 + 45x = 9,15% => x = 1,5

Suy ra c6 1 san pham c6 1 nguyen ti'r N trong phan nr, m(:it khac ban hop san phdm gom 2 chat hfru ca c6 so mol b~ng nhau nen san pham con l<!,i c6 2 nguyen nr N trong phan tll'.

CAu 34: Chon A

x~{peptitY: 0,472gampeptitY + IlHa =0,004mol . peptitX: 0,666gampeptitZ + nNaoH =0,006ino1'

Ciu29: Chon A

n _ a { 120a + 160b = 5,2 G . { FeS^{2 - ,} 2

+

b

QI Ilcu2S = b CO nN02 = ~~:2 ~=

8: (ba~-,;~~·~ ~;

A {120a + 160b = 5,2 {a= 0,0404 nen 13a + 9b = 0,545 ^¢:? b = 0,0022

A 0,0404.120

V<!,y %mFeSz =

5,2 . 100% = 93,23%

Cau30: ChqnA

nAgN03

=

nAg + IlNaCI = 0,004 + 0,01 = 0,014

=> mAgNo³ = 0,014.170 = 2,38 (gam) Cau 31: ChqnA

0,1 mol amino axit X tac dung vira du v&i O,lmol HCI ->X c6 1 nh6m -NHz

0,1 mo! rnudi Y phan img vira du v&i 0,3 mol NaOH ->Xc6 2 nh6m-COOH.

Gqi CT cua X la H2N- R-( COOH)2

H2N -R-( COOH)2 + HO--tCIH3N-R-( COOH)2

0,1 0,1

CIH3N-R-(COOH}2 +3NaOH--t H2N-R-(COONa}. +NaC1+3H20

0,1 0,3 0,1 0,1

I11z = 0,1.( 16 + R + 67.2) + 0,1.58,5 = 24, 95g -?R=41....+R:C3H5

r..iu32: Ch9nA

Your dreams-Our mission . Bg d~ tinh tuy on thi THPT quoc gia mon Hoa

Co/Ore(N~)) = 13,565%

Fe--t Fe3+ +3e 0,05 0,15 Fe~Fe2+ +2e

0,1 0,2

Cu~Cu2+ +2e 0,05 0,1

BTelectron )0,15+0,2+0,1

=

0,25(5-k)~ k=3,2

+) Xac dinh

so

mol O trong

Mn

hop khf.

Tong so oxi h6a cua cac nguyen

to

trong m(>t hon hop = O neno,2s.(+3,2)+{-2).n0 =Olln~ =0,4mol

Bao toan khoi hrong: mes sau

=

rn ddaxit + m 2klm I~ - m hh khl

-) mas sau= 87,5+ 11,6- (0,25.14+0,4.16)= 89,2 gam nen

N+s +

(5-k).e ~

^N+k

0,25 0,25(5-k) 0,25

Va

dong ( Cu---tCuO::::>nc..0 =ncu) -)160. ~

+

80.y = 16 (II)

2

Giai M (I) va (II) -e x= o,1s va y= o,os.

Co can dung djch Z clU'Q'C chat ran T nen chat ran T phal co KN03•

KN03 ~KN02+-01 2

2

Gia SU' chat r~ T khong c6 KOH thi khoi krong chat r~n sau khi nhiet phan T la khoi luong KNOz.

~ =0,5.85=42,Sg > 41,05g (Vo If).

Nen dung dich Z co KOH dir --t dung dich Z khong con ion cua 2 kim Ioai Fe, Cu.

Gqi

so

mol KN03,KOH du trong dung dich Z

la

a,b mol.

Ta co: a+ b

=

0,5 (Bao toan nguyen

to

^{K). (1);}

85a+56b=41,05g (Khoi hrong chat ran sau khi nhift phan) (2).

TU' (1),(2) suy ra a== 0,45; b = 0,05 . nKOH phan {mg= nmo,

=

0,4Smol . Neu HNQ3 du v~y Fe tr& thanh Fe* .

V~y nKOH phan irng >0,15.3

=

0,45mol ~ VO li,

V~y HNQ3 het Gol

so

^mol Fe2+,fe3+ trong dung dich X la c, d.

Theo dinh lu~t bao toan Fe : c + d

=

0, 15;

now =nKDH-neu>+ =2c+3d=0,45-0,05.2=0,35mol 4 c=O,l ;d=0,05

+) nNtrongkhf

=

^{nN{HN~) -nN(muoi)}

=

0, 7-0,45 =0,2Smol GQi

so

oxi h6a trung binh cua Nlto trong hon hQ'P khi B la +k(k:2:0)

LOVE BOOK. VN J 20

{

rnphanl

=

1,54

=

0,5

~ ffiH,0 +mHO =5,74-2,66=3,08=> rnpban2 3,08

ffillzO

=

1,62gam llco, =3.nCO,{ph.lnl) = 0,18"'01;nH,O = 1,5.nH,O(phanZJ

=

^0,135mol;

IlHa

=

1,5.nHQ(phanZ) =0,06mo!;IlN¹ =3nN,(phanl)

=

0,015mol ::::> BTNT: 0 ::::> n1 rn:,ngX) = 0, 03mo1

=> nc: nH: n0: n0 :nN =0,18:0,33:0,03:0,06 :0,03

=6:11:1:2:1

=> C6HHONC!z(M =184) Qu39:ChqnA nAh(S04)3

=

0,2.xmol

- Khi cha dung dich Ba(OH)z vao dung dich Alz(S04.)3 xay ra phan tmg

3Ba(OH)z + Ah(S04)3 ~ 3BaSO+I. + 2A1(0H)3,l.

- Lan thtr nhat: Gia SU' Ba(OH)2 phan img bet

~mi= 0,03.233 + O,D3. 2

3

^.78 = 8,55 (g)

~ dung theo

de

^{bai ~ nhan}

- Lan thu hai: Khi them tiep 0,02mo1 Ba(OH)2 vao thl hrong ket tua tang len (12,045 gam)

Neu ca BaSQ4 va A1(0H)3 deu ket tua bet thi mi= 0,05.233 + 0,05. 2

3

^.78

=

14,25 (g)

>

12,045 (g) Neu chi co BaS04 ket tua con Al(OH)3 b] hoa tan het thi

nu

s

0,05.233 = 11,65 (g)

<

12,045 (g) Nen khang dinh Ian thu hai xay ra 2 phan (rng va Al(OH)3 bj tan m¢t phan

3Ba(OH)2 + Ah(SQ4)3-) 3BaSQ4! + 2Al(OH)3J. (1) 0,6x(mol) 0,2x (mol) 0,6x(mot) 0,4x (mo!) Ba(OH)z + 2Al(OH)3 ~ Ba(Al02)2 + 4Hz0 (2) (0,05 - 0,6x)m⁰! 2.(0,05- 0,6x)mol

V~y sau phan tmg con

0,4x - 2.(0,05 - 0,6x) = (1,6x - 0,1)m01 AI(OH)3

Ket tu.a sau phan ung gom 0,6x mol Ba$Q4 va (2x - 0,7) molAl(OH)3

V~yta c6: 233.0,6x + 78.(l,6x- 0,1)

=

12,045

~x= 0,075M ca.u 40: Chon A

+) nHN~ ^87,5.50,4 Q, 7 ;nKOH ^mol

=

0,sm ^o1 100.63

{

IlFe= X mol

D~t ; ffihhkiml°'1i

=

11,6gam ncu = ymol

~ 56.x + 64.y

=

^{11,6 (I)}

n =n = 5,74 =0 04mol.

HQ AgCt,I. 143,5 ^{1 1}

ffiddgiam

=

ffikec tua - ffimroc - ffiHCI

Your dreams .:..-our mission SQ d~ tinh tuy on thi THPT quoc gla mon Hoa

LOVEBOOK.VN I 21

ALYTHUYE'I'

1. Thuy phan peptit.

2. U'ng dung cua cacbohidrat

3. Tinh chat cua amin dijc bi~t

la

anilin.

4. Cac polime quan trong va each dieu che chung, S.

Tinh

chat

ctia kim

loai kiem, kiem

tho.

B.B.AIT~

1. Chu

y

den dang bai ~p khi cho amino axit tac dung v&i HCI hoac NaOH thi ta

su

dung dlnh

luat

bao toan

khdl

hrong,

2. Boi v&i cac bai tj.p di~n phan dung dich ta thuong

su

^dung

Bieu

thee Faraday va dinh lu~t bao toan e.

3. Boi v&i bai tj.p kim loai tac dung dong thoi v&i mudi va axit ta viet phirong trinh ion va SU dung dinh Iuat bao toan e, bao toan nguyen to de giai.

4. Su dung phuong phap bao toan di~n tich.

5. Thuv nhan oeotit.

Your dreams -Our mission BQ de ti nh tuy on thi THPT qul;c gia m~n -Hoa

LOVEBOOK. VN I 22

Cau 1:

0

dieu ki~n thuong, chat nao sau day khong c6 kha nang phan img v&i dung dich H2S04 loang?

A. FeCh. B. Fez03. C. Fe3Q4. D. Fe(OH)3.

CAu 2: Thach cao song duc;rc dung

de

^{san xuat xi mang, Cong} thtrc h6a hoc cu.a thach cao song

la

A. CaS04.0,SH20.

B.

CaSQ4.HzO. C. CaSQ4.

D.

CaS04.2H20.

Cau 3: Kim loai nao sau day phan ung manh YOO nuoc

ct

nhi~t di} thuong ?

A. Ca. 8.