LYTHUYf'r

I I

t""'""';C.!,;.._·:,_~;;;_:~~'..Z~C"'~·''"- ,.:C:·'·~--=---"",,,.----··_- ·:<:c:~:c::;_-·,_-·-- -:-: · j"';-;---:_c;s,·~ . ..-;•~c,".""""' ,.-.;..:· ·---c·-··;_;. __ ._·:·, ._ ._. ·---. ·--'

LOVEBOOK.VN f 183

5. Bai

v&i bai toan kim Ioai kfern, ldem

tho ta

luon

c6

2

1 ^{nm.- = nH2 .} 6. Su dung phirong phap so dem.

7. Bai v&i cac bai ~p ve peptit neu peptit gorn cac a-amino axit no, mach

her

trong phan tu chira 1 nh6m - NH2,-COOH tao thanh k peptit thi d?t cong thtrc chung

la

C1cmHz1an+2=kNkOk+t . Ngoai ra cac em c6

the

^tham

khao them phuong phap dong dang h6a de dua cac peptit ve cac phan don gian ban.

B.BAIT~

1. Cach xac djnh so este, peptit duce tao thanh tir cac chat cho

truck

2. Boi voi cac bat toan do th] chung ta c6 the viet phirong trinh ion cua chung roi tinh de bai toan don gian hon cluing ta CO the SU' dung ngay tren do th! de tinh bang phuong phap hinh hQC nhu la SU' dung tam giac dongd.;ing

3. Bai v&i cac bat ~p di~n phan dung dich ta thuong SU' dung Bieu thirc Faraday va dinh lu~t bao toan e.

4. Bai v&i

bat

~p kim loai tac dung

dong

thoi v&i mudl va axit ta viet phuong trinh ion va SU' dung dinh luat bao toan e, bao toan

nguyen

to de giai.

LOVEBOOK. VN f 184

a.u 10. Phat bieu nao sau day la sai?

A. Thanh phan chinh

cua

^quang dolomit la CaC03.MgC03

B.Cac

kim loai

kiem

deu

co

cau true

m;,ing

tinh the l~p phuong

tam

khdi

C.

Na2C03 la nguysn li~u quan trcng trong cong nghiep

san

xuat thuy tinh D. Thach cao song (CaS04.2H20) duqc dung

de

b6 b<}t, due tuong a.u 11. Chat nao sau day co nhi~t

d9

n6ng chay Cao nhat?

A CH3CH2CH(NH2)-COOH B. CH3CH(NH2)-COOCH3

C.H2N-CHi-COOC2Hs D.CH3CQOCH2CH2CH2NH2

Ciu 13. Nhan xet nao sau day khang dung ?

A. Cho Cu²⁺ tac dung v&i NH³ du khong thu dtrqc ket tua.

B. Alva Cr tac dung v6i HCl deu c6 cung tI l~ mol ( kim Ioai v&i axit)

la

^{1 :3}

C.

Cho kim loai Fe du vao dung dlch AgN03 thu dtroc rnudi Fe2+

D. Cho AJ3+ tac dung v&i dung dich NaOH du khdng thu dtrqc ket tua,

CAu

14: Khi thuy phan

mot

octapetit X rnach

ha,

c6 cong thU'c cau tao la Giy-Phe-Tyr-Lys-Gly-Phe-

Tyr-Ala

thi thu dtrc;rc bao nhieu tripeptit c6 chfra Gly?

A4 R3 C.5 U6

Ciu 1S: V~n d{mg vien

the

thao thuong xoa vao tay m(>t Ioai bQt rnau trang de tang

ruang

dQ ma sat. V?y loai b(>t mau trang

ay

^c6

cong

thfrc la

A CaC03 B. Alz(S04)3

C.

Na2C03

A.2

B. HCOOC2Hs, CH3COOCH3, CzHsCOOH.

D.

C2HsCOOH, HCOOC2Hs, CH3COOCH3.

Ciu 8. Ba chat hiru CO' don clnrc, rnach

ha

X, Y, Z c6 cung cong thirc phan tir C3H602 va c6 cac tfnh chat: X, Y, Z · deu phan (mg duce v&i dung dlch NaOH; X, Z deu khong co

kha

nang tac dung v&i kim loai Na; khi dun n6ng chat X voi dung dich H2S04 Ioang thi trong so cac san pham thu duoc, co m9t chat c6 kha nang tham gia phan (mg trang bac, Cac chat X, Y, Z

Ian

^luot

la

A

CH3CQOCH3, C2HsCOOH, HCOOC2Hs.

C. HCOOC2Hs, C2HsCOOH, CH3COOCH3.

CAu 9.

So

lien

ket peptit trong hop chat sau la:

H2N-CH2-CO-NH-CH(CH3)-CO-NH-CH (C6Hs)-CO-NH-CH2-CH2-CO-NH-CH2-COOH

B. 3

C.

4 D.1

C.iu 6.

So

este c6 cong thirc phan ttr (4Ha02 ma khi thuy phan trong moi tnrong axit thi thu dtrgc axit fomic

la

A 1. B. 2.

C.

3. D. 4.

Cb 7. Cac chat mantozo, glucozo, fructozo va saccarozo co tfnh chat chung nao du&i day ? A Phan rmg v&i Cu ( OH\ dun n6ng sinh ra

ket

tua d6 gach,

B. Thuy phan trong moi tnrong axit sinh ra monosaccarit

C. Phan

UTigv&i Cu(OH)2 tao dung djch xanh lam.

D. Phan frng v&i AgN03

I

NH3 dun n6ng sinh ra ket tua Ag a.u S. Chat nao sau day phan (mg v&i HN02 tao ket tua mau vang :

A.

CH

³

NH

²

B.C

⁶

H

⁵

NH

²

C.CH

³

-NH-C

²

H

⁵

DI! s6 21

Cau 1: Trong dung dich, chat nao sau day khong co kha nang' phan frng v&i Cu(OH)2

a

nhi~t d9 thuong

la

A glucozo. B. axit axetic.

C.

ancol etylic, D. saccarozo, CAu 2: Este X c6 cong thrrc cau tao thu gon CH3COOCH2CH2CH3. V~y ten goi cua X la

A rnetyl butirat

B.

propyl axetat.

C.

etyl propionat.

D.

isopropyl axetat cau 3: Ten got cua hop chat c6 cong thirc H2N - [CH2]4 - CH(NH2) - COOH la:

A. Lysin

B. Glyxin

C. Alanin

D.

Axit Glutarnic

ca.u

4: Este nao sau day khi dun n6ng v&i Iuong du dung dich NaOH, thu dm;rc cac san phdm hfru CCY deu khong lam mat mau mroc brom ?

A CH3COOCH=CH2. B. CH2=CHCOOCH=CH2.

Your dreams- Our mission

89

de

^tinhtuv· on thi THPT quoc gia mon Hoa

Chat Y c6 d~c diem

la

A Tac dung v&i NaOH theo ti I~ mol 1 :2.

B.

-Dieu che tnrc tiep

ru

ax:it va ancol ttrong (rng.

C.

Tham gia phan frng trang guong, D. Khong the tac d\l ng voi n UO'C brom.

c&u

18: Dung

dich

Cu(N03 )2 c6 rnn tap chat AgN03 • Chat

nao

sau day c6 the

loal

ho duoc

tap

chat ? A B9t Cu du, Ioc, B. B9t Ag du,

loc, _

C. Bqt Al du, loc, D. Bqt Fe du, I9c.

ca.u 19: Truong hop nao duoi day thu dU'Q'C ket tua sau khi phan (rng xay ra hoan toan?

A Cho dung dich NaOH du vao dung dich AlCh. B. Cho CaC03 vao hrong du dung dlch HCI.

C. Cho dung dich Al Cb du vao dung dich NaOH. D. Sue C02 t&i du vao dung dich Ca(OH)2.

au

20: Thuy phan mqt triglixerit X bang dung dich NaOH, thu duce hon hop mudi gom natri oleat, natri stearat (c6 ti l~ mol tirong img la 1: 2) va glixerol. C6 bao nhieu triglixeritX thoa man tinh chat tren?

A 4.

B.

1. C. 3.

D.

2.

Cau 21: f>ieu nae sau day

la

sai?

A Nhi~t phan den cung mudi Ba(HC03)2 thu duqc chat ran BaO.

B. Bun n6ng mr&c cimg gm thoi. thu duoc hai loai ket tu.a Ia CaC03 va MgC03

C.

Nham la kim loat pho bien nhat trong vo Trai Bat.

D.

MQi kim

loal

kiem va kiem tho deu tan d~ dang trong mr&c.

Cau 22: Chia 1,24 gam hon hop hai kim loat c6 h6a tri khong doi thanh hai phan bang nhau.

Phan 1: b] oxi h6a hoan roan thu dUQ'C 0,78 gam han hop oxit.

Phan 2: tan hoan toan trong dung dich H2S 04 loang th u dtrgc

v

lit H2 ( dktc). Co can dung dich thu duce m gam mudi khan. Gia tri

rua ^{V va}

^m

la

A 2,24 Iit va 2,54 gam B. 0,224 lit va 2,54 gam

C.

2,24 Iit va 1,58 gam D. 0,224 lit va 1,58 gam Cau 23: Khi n6i ve protein, phat bieu nao sau day sai?

A Thanh phan phan tu' cua protein Iuen c6 nguyen to nlto.

B. Tat

ca

cac protein deu tan trong mroc tao thanh dung dich keo.

C. Protein la nhfrng polipeptit cao phan hr c6 phan tu kboi

ru

vat chuc nghin den vai tri~u.

D.

Protein c6

phan trng mau

biure.

cau

24: Dung dich glixerol v&i nong d9 32,2% (d = 1,6 g/ml). Be phan img vira bet v&i 50 ml dung dich glixerol tren can dung vira het m gam Cu(OH)2

a

dieu ki~n thuong. Gia tri cua m

la

A 8,875 B. 54,88 C.13,72 D. 27,44

au

25: Hoa tan hoan tan 51,lgam hon hop X gom NaCl va CuS04 vao nuoc thu duce dung dich Y. f>i~n phan dung dich Y VO'i di~n C\l'C tro, CO mang ngan xop den khi nuoc bat dau bi di~n phan

a

hal Cl!C thi dung lai, Luc d6, the tich khl

a

anot sinh ra gap 5 Ian

the

tich khi sinh ra

a

canot( cac the tich khf do & cung nhiet d9, ap sudt), Phan tram khoi ltrqng CuSQ4 & trong ban hgp X la

A 94,25% B. 73,22%

C.

68,69% D. 31,31%

Ciu 26: Nung n6ng 22,12 gam KMnQ4 va 18,375 gam KCI03, sau mqt thoi gian thu duqc chat ran

x

^{gom 6} chat c6 khoi ltrqng 37,295 gam. Cho X tac d1,mg v&i dung djch HCl d~c dtr, dun n6ng. Toan b9 Iugng khi do duqc cho phan frng het v&i m gam bqt Fe dot n6ng dU'Q'C chat ran Y. Hoa tan hoan toan Y vao nu&c dtrqc dung djch

Z.

Them AgNQ3 dtr vao dung djch

Z

den

khi

phan ung hoan toan dtrqc 204,6 gam ket tu.a. Gia trj cu.a m

la

A22,44 B.28,0

C.

33,6

D.

25,2

CAu 27: Tien hanh cac thi nghi~m sau:

(a) Cho Mgvao dung djch Fe2(S04)3 dtr (b) S\]c khi Ch vao dung dich FeCh ( c) D~n khi H2 du qua b9t CuO nung n6ng

Cau

16: Amin R

co cong thirc phan

ti'r la

C

⁷H9

N.

So dong

phan

amin thorn cua

R la

A4 B.5 C.6 D.3

Ciu 17: Cho ^SO'

do

phan frng sau :

Y~Z

¹

+Z

²

Z1 ~ A1 ~ B1 ( axit picric]

Zz ~

A2 ~ C2 (poli metylacrylat)

- I

I f

Your dreams.- Our mission 89 de tin h tuy on t_hi THPT quac gia mon Hoa

Cau 31:

Chat

hfru CO' x

c6

Cong

thirc phan

tu la cl7Hl6 0 4 , khong lam mat

mau

dung

dich

Br2. x tac dung vot NaOH theo PTHH: X

+

^{2NaOH ~ 2Y}

+

^Z trong d6 Z boa tan Cu(OH)2 tao thanh dung dich mau xanh lam.

Phat bieu nao sau day dung:

A Cho 15,2g Z tac dung v&i Na du thu du<;Yc 2,24 lit H2 ( dktc).

B. X

co

2 dong phan

cau tao thoa

man dieu ki~n bai toan.

C. Ty I~ khoi hrong C trong Yla 7:12

D.

Khong the

tao

ra Y

tir hidrocacbon ttrong ung bang mgt

phan img.

Ciu 32: Hon h<;YP X gom Mg (0,10 mol), Al

(0,04 mol)

va Zn

(0,15 mol).

Cho X tac

^dung v&i

dung dich

HN03 loang (du), sau phan ung khoi hrong dung dich tang 13,23

gam. So

^{mol HN03} tham gia phan ung la

A 0,6975 mol. B. 0,7750 mol, C.1,2400 mol. D. 0,6200 mol.

CAu 33. Sue khi H

²

S cho

toi

du vao

100ml

dung dich hon hop gom FeCI

³

0,2M va

CuCl2 0,2M; phan (rng

xong

thu dugc a gam ket tua.Gia tri cua a la:

A3,68gam. B.4gam. · G.2,24gam. D.l,92gam.

CAu 34: Dung dich X gom Alz(S04)3 0,75M va H2S04 0,75M. Cho V1 ml dur-g rljr~ K0H 1 M vifo 100 ml dung dich X, thu dU'<;YC 3,9 gam ket tua, M~t khac, khi

cho

V2 ml dung dich KOH lM vao 100 ml dung dich X cUng thu dtrqc 3, 9 gam ket tua Biet cac phan tmg xay ra hoan toan, TI I~ V 2 : V 1 la

A.25:9. B.7:3. C.13:9. D.4:3.

Cau 35: Cho 115,3 gam

h6n

^hep

hat

mudl MgCQ3 va RC03 vao dung dich H2SO .. loang, thu dl.l'(!C 4,48 lit khi COz (dktc), chat

ranXva

dung dich Y

chtra

12 gam

rnudi,

NungX den khoi luong khfmg doi, thu dugc chat

ran

Z va 11,2 lit khi C02 ( dktc). Khoi hrong cua Z la

A 88,5 gam. B. 84,5 gam.

C.

80,9 gam. D. 92,1

gam.

Ciu 36: Bot chay het m

gam h6n

h<!J) amin X gem hai amin no, don chuc, m~ch

ha

^{thu dll'(!C a gam Illl'O'C}

Va

^V

lit C02 (dktc). Moilien

he

gifi'a m, a, V la

17a SV 7a SV

A. m =

27 +

42 B. m

=

27

+

42

17a V 17a SV

C.m=rr

+

42 D.m:::::27

+

32

Ciu 37:

Xa

phong

hoa hoan

toan m gam m9t este no, don chuc, m~ch h& E

bang

26 gam dung d!ch MOH 28%

(M la kim lo;;ii kiem). Co ~n

hon

h<;YP sau

phan

llilg thu dm;rc 24,72 gam chat long va 10,08 gam chat

ran

khan Y. Bot chay hoan toan Y, thu QU(!C san pham gom C02, H20 va 8,97 gam muoi caclkmat khan. M~t khac, . ~ cho X tac d1,mg v&i Na dl.l', thu dl.l'Q'C 12, 7 68 lit khi Hz ( dktc). Phan tram khoi ltrgng muoi trong Yi c6 . a ttj ~ ~ nMtv&i

LOVEBOOK.VN f 186

B. CH²

=

C(CH^{3) -} COO Na

D. CH

² = CH - COONa

CA.u

30: A la chat hiru co-

co ceng thtrc

phan ttrC³H⁷N0^2• A tac dung voi NaOH thu duqc chat khi X lam xanh giay qui tim

am,

X nhe hon

khong

khi

va

phan dung dtch

co

chua mudi Y, Y

co

kha nang lam

mat

mau nuoc

brom.

Cong

thuc

cua

Y la

A.HCOONa

Ciu 28: Cho

100ml

dung

dich

chrra

NaOH

lM, KOH 1M va

Ba(OH)2

vao

lOOml dung dich

AlCh

xM thi thu dugc 7,8 gam ket tua, V~y neu cho 150ml dung dich NaOH 1M vao 100ml dung dich AlCh xM thl khoi luong ket tua thu dUQ'C va gia tr] x Ia ( biet cac phan ung xiiy ra hoan toan)

A 11,7 gam

va

^1,6 B. 9,36 gam

va

^2,4 C. 3,9 gam va 1,2 D. 7,8 gam va 1,0

Cau 29: Tien hanh phan ung thuy phan 17,lg mantozo trong moi tnrong axit v&i hi~u suat phan llilg thuy phan la 80%. Lay toan b<) dung dich sau phan img' ( sau khi trung hoa axit ) cho tac dung v&i dung dich

AgN03 trong NH3 du, dun

n6ng.

Khdi

hrong

Ag thu diroc sau phan img la

A 19,44 B. 21,6 C. 10,8 D.17,28

D.5 ( d) Cho Na vao dung di ch CuS04 du

( e) Nhi~t phan AgN03 (g)

Dot

FeS2 trong khong khi

(h) Bi~n phan dung dich CuSQ4 voi di~n cue tro

Sau khi ket thuc de phan trng,

so

thi nghiem thu dU'(!C kim

loai la

A3 B.2 C.4

B{I de tinh tuy on thi THPT quuc gla mon Hoa

- • h .:"'.: -:--:....·_.:.::..~. -~. '. :;.;.~ .' _-~--: -.· ••• .•.. .-

CAu 38: E>i~n phan

dung

dich chira

m gam

h6n h9'P 2

muoi

CuS04 va

NaCl bang

di~n cue tro,

co

mang ngan den khi IlU'O'C bi di~n phan

a

ca 2 di~n C\!C thi ngimg di~n phan, Dung dich sau di~n phan hca tan vira

du

1,16 gam Fe304 va

a

anot cua binh di~n phan c6 448 ml khl bay ra (dktc).

Khoi

lirong dung dich giam sau khi di~n phanla

A 8,60 B. 2,95

C.

7,10 D.1,03

CAu 39: Chia 156,8

gam

hein hop A

gom

FeO, Fe304, Fe203 thanh hai phan

Mng

nhau. Cho phan thtr nhat tac

dung

het

v&i

dung

dlch HCI

du dlfQ'C 155,4

gam

mudi

khan.

Phan thu

hai

tac dung vira

du v&i

dung

dich

B

la hon

hop HCl, H2S04 loang thu dll'gc 167,9 gam rnudi khan.

So

mol cua HCl trong dung dich B

la

A 1,75 mol B.1,50 mol C.1,80 mol D.1,00 mol

CAu

40: Dot

chay hoan toan m gam

hon hop

gom

hai

peptit

X1, X2

la

dong

phan cua

nhau can dung 19,6 gam 02 ~ thu UU'(!C 11,76 lft C02 (dktc) va 9,45 gamH20. M~.t khac, neu

hco

m gam hon hop tren

tac

dung het voi 200ml dung dich NaOH lM roi

co

C<J,n dung dich sau phan trng thi

con

lai 13,95 gam chat ran khan. Biet goc axit cua X2 c6

so

nguyen

tu

cacbon Ion hon

goc

axit cua X1• Ti I~ mol cua X1

va

X2 trong

hon

hop l~n luot la

A 2:3 B. 5:4 C. 4:3 D. 3:2

B.80,0. C.67,5. D.83,3.

A97,5.

Your dreams- Our rnlsslcn .. ,. _.

• -: . '.i.~.

BQ de tin h tiiy on thi THPT quoc gia men Hoa

l

~

'

~

! I

- I

j

l l

I

Cu+2AgN03 --:1"Cu(N0³⁾² +2Ag Clu 19: Ch9n C

~2(3)

c~·

CAu 17: ChqnA

Yla C6H500C- CH= CH2

CH2

=

CH - COONa ~ CH2

=

CH - COOH (Z2)

~ CH2

=

CH - COOCH3(A2) ~ Polime(B2) ca.u 18: Ch9nA

Chu y:

So sdnh nhift d9 n6ng chay, nhift d9 soi dir« vao lien ket hidro giii'a aic phan tu- ctia chat <16.

So ssnh t/9 tan ta dµ-a vao lien ket hidro giira cac ph.in tu' chat t/6 v6i ph.in

w

IJU'O'C. Thong thll'¢'ng nhift t/9 n6ng chJy, nhift d9 soi ais axit la cao nhat so v6i cic chat htiu

CO' c6 phan Af khoi W'O'IJg GU'O'llC, tiep theo la sncol: Este khong

co

lien ket hidro nen nhift d9 n6ng chay thap.

CAu 13. ChQn B

A B(mg vi Cu( OH)2 tan trong N~ dU' tcilo thanh phfrc mauxanh tham.

B. Sai Cr+ 2HCl ~ CrCI2 + H2

C,Ddung.

CAu 14: ChQn B

Cac tripeptit c6 chira Gly la Gly- Phe -Tyr;

Tyr - Lys - Gly; Lys - Gly - Phe.

cau 15: ChQn D

MgC03 la Io<iii the cln bqt mau trang rat nh~, c6 kha nang hut am

rat

mqnh dong thO'i tang ma sat gifra long ban tay Va d1,mg C\l nen dU'Q'C cac ~Il d(,ng vien SU' d1,mg.

CAu 16: ChQn A

Amin thom la amin c6 nguyen tir N lien ket tr\fC tiep VO'i C trong vong benzen.

Cac dong phan amin tham co CTPT la ~R,N la :

LOVEBOOK.VN I 188 c:Au9.ChQnA

V1 X,Y,Z deu tham gia phan frng dung djch NaOH, deu c6 cung CT c;H602 nen X,Y,Z chi c6 the la cac axit, este no don clnrc mach ho. X,Z khong c6 kha nang phan tmg v&i Na nen Y la axit C2HsCOOH con X,Z la cac este. Khi dun n6ng X v&i dung dich H2S04 loang thl trong s6 cac san pham thu dtrgc, c6 mqt chat c6 kha nang tham gia phan tmg trang bac la HCOOH nen X Ia HCOOC2H5;Zla

Cf4COOCH3•

Este X c6 cong th(rc cau tao thu gen CH3CQOCH2CH2CH3.

Ten got cua X la propyl axetat Ciu 3: Chon A

Ten gol cua hop chat c6 cong thfrc H2N - [CH2J.t- - CH(NH2)- COOH Ia: Lysin

Q.u4: ChQnC

CH3COOCH

=

CH2 + NaOH ~CH3COONa +CH3CHO +Hp

CH2 = CH COOCH= CH2 + NaOH ~CH2

=

CHCOONa +CHj:HO+ Hp CH3CH2COOCH3 + NaOH ~CH3CH2COONa +CH pH

CH3COOCH2CH

=

^CH2

⁺

^{NaOH ~CH3COONa +CH2}

=

^{CH-CH zOH}

Nhln vao PTHH ta thay dap an C tao ra hai san pham la C~CH2COONa,CH30H deu khong lam mat mau mr&c Brom.

CAuS.Ch9nC

Vi chi c6 cac amin b~c 2 khi phan (rng

vm

^{HN02 tao ket}

tua vang,

Chu y:

Amin b!c 1 khi phJn ring v6i HN02 teo khf N2

khong msu: Amin b#c 3 khong phan ring v6i HN02•

CAu6. Ch9nB

C4Hsoz( -rr- 4.2~2-8

1)

S6 este c6 cong thirc C4H802 khi thuy phan trong moi tru<mg axit thu UU'Q'C axitfomic Ia:

HCOOCH²Cf4CH³ ,HCOOCH(CH³)CH³ Q.u7.Ch9nC

Q.uB.Chc;mC

Chat khong c6 kha nang phan (mg v&i Cu(OH)2 & nhiet d(, thuong

la

ancol etylic.

Chu y:

Ancol muon phan ring v6i dung djch Cu(OH)2 6' nhi#t <19 thU'O'llff thl dieu kifn phai la ancol de chtrc c6 2 nh6m -OH

ke

nhau.

Ciu!: ChQnB

Khi cac phan (mg xay ra hoan toan, ta c6

A.Cho dung dich NaOH du vao dung dich AICh : Vi NaOH danenkh6ngthEt<iio kettua AI(OH1

B. Cho CaCOJ vao hrong du dung dich HCI : Vi HCl d11 nen da hba tan h& hrong ket tua CaCOJ

C. Cho dung djch AlCh d11 vao dung djch Na OH : Vi AI Ch d11 nen vb. tao ket tua Al(OH1

H2N-CHz-CO-NH-CH(CH3)-CO-NH-CH(C6H5)-CO-NH-CH2-CH2...CCbNH...cHi-f:MH , d di h n fNn) Vi "O d A

•A • , , • • •

v.;;r,rci..:uz ..

dnntvao ung JC ua\.un 2: l u 2 U' nen

;~enlket peptit dugc tao ra tt:r hai don V! a-ammo axtt, sau khi tao ket tu.a CaCOJ th, ket tu.a binoa tan boo hrong

""u 0. Chon D COz du- . . .

HUONG DAN GliU

Thach cao nung (CaSQ4.0,SH20 ho~c CaS04.H20) duoc dung de b6 b(,t, due nrong,

Ciull. ChQnA Ciu 1: Chon C

1C 2B 3A 4C SC 68 7C SC 9A 100

11A 120 138 14B 150 16A 17A 18A 19C 20D

21D 220 23B 24C 250 26B 27A 28C 29A 30D

31C 32B 33C 348 350 36A 37A .38B 39C

40C

DAPAN

Your dreams -_·our mission Bi;,

de

tlnh tuy 611 thl TH PT quoc gia mon H6a

+

Ag+le~Ag

::::::, BT mole c6: 2.0,6 + nAs

=

3. y;

ml;(( tua = m,¥1 + m..,i

=

0,6.2.143,5 + 108n~ = 204,6 ::::::, n..,8 = 0,3"'o1 ::::::, y

=

0,5i:no1

::::::, m

=

mn: = 0, 5.56

=

288-

CAu 27: Chon A Cac phan t'rng xay ra:

(a) Mg+ Fe2(S04)3 (du) - MgS04 + 2FeS04 (b) Cl2

+

2FeC12 - 2FeC13

to

(c) H2 + CuO ~Cu+ H20

(d)

I

^{Na+ H20 - NaOH + ~H2}

2NaOH + CuS04 - Cu(OH)2 + Na2S04

t0 1

(e) AgN03--+ Ag+ N02 +

2

02 tO

(g) 4FeS2 + 1102--+ 2Fe203 + 8502

c1pdd 1

(h) CuS04 + H20 - Cu+ H2S04 +

2

02 CAu 28: Chon C

Ilo9- = IlNaOH + ^IlKOH + ^2DBa(OH)z

= 0,1 + 0,1 + 2.0,09

=

0,38 mol nAI3+

=

O,lx (mol)

7,8

IlAI(OHh = 78 = 0,1 mol AI3+ + 30W - Al(OH)3 ! (1) Neu ketthuc (1) ma OW con thi:

Al(OHh + OH- --+ [Al(OH)4]- (2) Xet hai truong hop :

-TH1: (2) chua

xay

ra nen nA13+

=

0,lx

=

^{0,1 => x = lM}

Khi cho 150ml dung dich NaOH 1M vao 100ml dung dich AlCh lM thl hrong ket tu.a thu dU'Q'C la:

78.0,15 (I , khA , d' , hA _ ) --3- = 3,9 gam oai VI ong co ap an t oa man -TH 2: (2)

xay

^ra

(1)~ nAl(OHh max

=

0,lx;

(2) Va gia thiet => IlAJ(OHh pban U'Jlg

=

0, 1 (X - 1) (1),(2) => n0H- = 0,3x + O,l(x-1)

=

0,38 => x

=

1,ZM Khi cho 150 ml dung dich NaOH 1M vao lOOml dung dich AICh 1,2M thl hrgn Teet tua la

78.0,15

-3-=3,9gam CA.u29: ChQnA

+3

Fe~Fe+3e

o.is=' o.s='

xmol zx111ol

~0,7+0,9=0,4+2x::::::, x=0,611101

+s -1

Cl+ 6e~Cl

-2

20----?02 + 4e O,lmo1 014mo1

+7 +2

Mn+ se~Mn

*.A.p dung dinh lu~t bao toan mole cha tcan b9 qua trlnh, taco:

Q,lmol 22,12 + 18,375 - 37,295

32

- nglixerol

-o

14"'ol

-o

14 98-13 72r;,m

=>0cu(OH)z --2-- , =>m- , · - , Clo 25: Chon D

dien phin dung dich

CuS04 + 2NaCl . . Cu i +Cl2 t +Na2S04

x 2x x

Vi CO khi thoatra O' catot nen_nNaCI

>

2ncuso4

• dJ .. n phSn dung djch

2NaCl +

-zH;o

^{.:1,,, 2NaOH + H2}

r

^{+ Cl2}

r

(y - 2x) O,S(y- Zx) O,S(y - 2x)

=> 0,S(y - 2x) + x = 1,5.0,5. (y- 2x) ~ y

=

6x 160

%mCuS04

=

^SB,S.6 + _160. 100%

=

31,31 % Ciu26:ChQnB

n = 22,12=014mol,

KMnO, 158 , ¹

n = 18,375 =O lSmol

KOO, 122,5 ^I

~ mmuoi = mkim lo~i + msol-

= 0,62 + 0,01.96

=

1,58 gam Ciu 23: Chon B

B: sai do c6 mQt so protetin khong tan trong nuoc nhu:

keratin c6 trong toe, sirng, ...

CAu 24: ChQn C

CHzOH HO HOCH2

(HOH +

Ctl

^{+ HOCH I}

€H20H

OH

HOCHJ

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