CHNG I

CHNG I. ESTE - LIPITCu 1.1 Khi un hn hp gm etanol v axit axetic (c mt H2SO4 c lm xc tc), c th thu c este c tn l

A. ietyl ete.

B. Etyl axetat.

C. Etyl fomiat.

D. Etyl axetic.

Cu 1.2 C cc nhn nh sau : (1) Este l sn phm ca phn ng gia axit v ancol; (2) Este l hp cht hu c trong phn t c nhm - COO - ; (3) Este no, n chc, mch h c cng thc phn t CnH2nO2 , vi n 2 ; (4) Hp cht CH3COOC2H5 thuc loi este; (5) Sn phm ca phn ng gia axit v ancol l este. Cc nhn nh ng l

A. (1), (2), (3), (4), (5).B. (1), (3), (4), (5).

C. (1), (2), (3), (4).

D. (2), (3), (4), (5).Cu 1.3 Xt cc nhn nh sau:(1)Trong phn ng este ho, axit sunfuric va lm xc tc va c tc dng ht nc, do lm tng hiu sut to este; (2) Khng th iu ch c vinyl axetat bng cch un si hn hp ancol v axit c axit H2SO4 c lm xc tc; (3) iu ch este ca phenol khng dng axit cacboxylic thc hin phn ng vi phenol; (4) Phn ng este ho l phn ng thun - nghch. Cc nhn nh ng gm

A. ch (4).

B. (1) v (4).

C. (1), (3), v (4).

D. (1), (2), (3), (4).Cu 1.4 Hn hp X gm 2 este mch h E (C5H6O4) v F (C4H6O2). un hn hp X vi dung dch NaOH d, sau c cn dung dch, thu cht rn Y. Nung Y vi NaOH (c mt CaO) th c mt cht kh l CH4. Vy cng thc cu to ca E v F l

A. HOOCCH = CH COOCH3 v CH3OOC CH = CH2.

B. HOOC COO CH2 CH = CH2 v H COO CH2 CH = CH2.

C. HOOC CH = CH COO CH3 v CH2 = CH COO CH3.

D. HOOC CH2 COO CH = CH2 v CH3 COO CH = CH2.

Cu 1.5 Tng s lin kt ( v s vng trong phn t este (khng cha nhm chc no khc) to bi glixerol v axit benzoic l : A. 3.

B. 4.

C. 14.

D. 15.Cu 1.6 ng vi cng thc phn t C4H8O2, s tn ti cc este vi tn gi : (1) etyl axetat; (2) metyl propionat; (3) metyl iso-propylonat; (4) propyl fomiat; (5) iso-propyl fomiat. Cc tn gi ng ng vi este c th c ca cng thc phn t cho l: A. (1), (2), (4), (5).B. (1), (3), (4), (5).

C. (1), (2), (3), (4).D. (2), (3), (4), (5)

Cu 1.7 Phn ng thu phn ca este trong mi trng axit (1) v mi trng baz (2) khc nhau cc im : a/ (1) thun nghch, cn (2) ch mt chiu; b/ (1) to sn phm axit, cn (2) to sn phm mui; c/ (1) cn un nng, cn (2) khng cn un nng. Nhn xt ng l A. a, b.B. a, b, c.

C. a, c.

D. b, c.

Cu 1.8 Cng thc tng qut ca este to bi mt axit cacboxylic v mt ancol l

A. CnH2nO2.

B. RCOOR.

C. CnH2n 2O2.

D. Rb(COO)abRa.

Cu 1.9 Cng thc tng qut ca este to bi mt axit cacboxylic no n chc v mt ancol no n chc (c axit v ancol u mch h) l

A. CnH2n+2O2.

B. CnH2n 2O2.

C. CnH2nO2.

D. CnH2n + 1COOCmH2m +1.

Cu 1.10 Este ca glixerol vi axit cacboxylic (RCOOH) c mt s hc sinh vit nh sau: (1) (RCOO)3C3H5; (2) (RCOO)2C3H5(OH); (3) (HO)2C3H5OOCR; (4) (ROOC)2C3H5(OH); (5) C3H5(COOR)3. Cng thc vit ng l

A. ch c (1).

B. ch c (5).

C. (1), (5), (4).

D. (1), (2), (3).Cu 1.11 Cng thc tng qut ca este thun chc to bi ancol no hai chc v axit khng no c mt ni i, ba chc l A. CnH2n - 10O6.

B. CnH2n -16O12.

C. CnH2n - 6O4.

D. CnH2n - 18O12.

Cu 1.12 Trong s cc phn ng c th c ca este gm: (1) phn ng trng hp; (2) phn ng cng; (3) phn ng thu phn; (4) phn ng oxi ha, phn ng c trng cho mi este l

A. (1). B. (4).

C. (3).

D. (3) v (4).

Cu 1.13 Nhng pht biu sau y : (1) Cht bo khng tan trong nc; (2) Cht bo khng tan trong nc, nh hn nc nhng tan nhiu trong dung mi hu c; (3) Du n v m bi trn c cng thnh phn nguyn t; (4) Cht bo l este ca glixerol v axit hu c. Cc pht biu ng l

A. (1), (2), (3), (4).

B. (1), (2).

C. (1), (2), (4).

D. (2), (3), (4).

Cu 1.14 Trong thnh phn ca mt s loi sn c trieste ca glixerol vi axit linoleic C17H31COOH v axit linolenic C17H29COOH. S lng cng thc cu to ca cc trieste c th c trong loi sn ni trn l:

A. 6.

B. 18.

C. 8.

D. 12.

Cu 1.15 Este mch h, n chc cha 50%C (v khi lng) c tn gi l

A. etyl axetat.

B. vinyl axtetat.

C. metyl axetat. D. vinyl fomiat.Cu 1.16 Este X (C8H8O2) tc dng vi lng d dung dch KOH thu c 2 mui hu c v H2O. X c tn gi l

A. metyl benzoat.

B. benzyl fomiat.

C. phenyl fomiat.

D. phenyl axetat.Cu 1.17 Cht X c cng thc phn t C4H8O2. Khi X tc dng vi dung dch NaOH sinh ra cht Y c cng thc C2H3O2Na. Cng thc cu to ca X l

A. HCOOC3H7

B. C2H5COOCH3

C. CH3COOC2H5

D. HCOOC3H5.

Cu 1.18 Khi un hn hp 2 axit R1COOH v R2COOH vi glixerol (axit H2SO4 lm xc tc) c th thu c my trieste ? A. 6.B. 4.

C. 18.

D. 2.

Cu 1.19 Trong s cc este: (1) metyl axetat; (2) metyl acrylat; (3) metyl metacrylat; (4) metyl benzoat, este m polime ca n c dng sn xut cht do gm

A. (1), (2), (3).

B. (1), (4).

C. (2), (3); (4).

D. (3), (4).

Cu 1.20 S nguyn t cacbon ti thiu trong phn t este khng no, mch h l

A. 2.

B. 5.

C. 4.

D. 3.Cu 1.21 S nguyn t cacbon ti thiu trong phn t este (c to nn t axit v ancol) no a chc, mch h l: A. 2.

B. 5.

C. 4.

D. 3.Cu 1.22 un nng hn hp gm x mol axit axetic v y mol etylen glicol (xt H2SO4 c). Ti thi im cn bng thu c 0,30 mol axit, 0,25 mol ancol v 0,75 mol este (khng tc dng vi Na). x, y c gi tr l

A. x = 1,05; y = 0,75.B. x = 1,20; y = 0,90.

C. x = 1,05; y = 1,00. D. x = 1,80; y = 1,00.Cu 1.23 Trong s cc ng phn mch h c cng thc phn t C2H4O2, s ng phn c kh nng tc dng vi dung dch NaOH, natri kim loi, natri cacbonat, dung dch AgNO3 trong amoniac ln lt l:

A. 2, 2, 1, 2.

B. 2, 1, 2, 1.

C. 2, 2, 2, 1.

D. 1, 2, 2, 1.

Cu 1.24 ng vi cng thc phn t C3H6O2, mt hc sinh gi tn cc ng phn este c th c gm: (1) etyl fomiat; (2) metyl axetat; (3) iso propyl fomiat; (4) vinyl fomiat. Cc tn gi ng l

A. ch c (1).

B. (1) v (2).

C. ch c (3).

D. (1), (2) v (3).

Cu 1.25 Tn gi ca este (c to nn t axit v ancol thch hp) c cng thc phn t C4H6O2 l

A. Metyl acrylat.

B. Metyl metacrylat.

C. Metyl propionat.

D. Vinyl axetat.

Cu 1.26 Cho 2 mol CH3COOH thc hin phn ng este ho vi 3 mol C2H5OH. Khi t trng thi cn bng trong hn hp c 1,2 mol este to thnh. nhit hng s cn bng Kc ca phn ng este ho l:

A. 1.

B. 1,2.

C. 2,4.

D. 3,2.

Cu 1.27 Cht X tc dng vi NaOH cho dung dch X1. C cn X1 c cht rn X2 v hn hp hi X3. Chng ct X3 thu c cht X4. Cho X4 trng gng c sn phm X5. Cho X5 tc dng vi NaOH li thu c X2. Vy cng thc cu to ca X l

A. HCOO C(CH3) = CH2.

B. HCOO CH = CH CH3.

C. CH2 = CH CH2 OCOH.

D. CH2 = CH OCOCH3.Cu 1.28 Hn hp T gm 2 cht X, Y mch h (C,H,O) n chc u khng tc dng c vi Na, nhng u tc dng vi dung dch NaOH khi un nng. t chy hon ton m g T, thu 6,72 lt (ktc) CO2 v 5,4g H2O. Vy X, Y thuc dy ng ng

A. este n, no.B. este n no, c 1 ni i. C. este n, c mt ni ba.D. este n c 2 ni i.

Cu 1.29 Pht biu no sau y sai ?

A. Phn ng x phng ho l phn ng thu phn este trong mi trng kim, un nng.

B. Cht bo l este ca glixerol vi cc axit bo.

C. Glixerol kh nc hon ton cho sn phm l acrolein (CH2=CH-CHO).

D. Cc axit bo c mch cacbon khng phn nhnh, s nguyn t cacbon chn.

Cu 1.30 Cch no sau y c th dng iu ch etyl axetat ?

A. un hi lu hn hp etanol, gim v axit sunfuric c.

B. un hi lu hn hp axit axetic, ru trng v axit sunfuric c.

C. un si hn hp etanol, axit axetic v axit sunfuric c trong cc thu tinh chu nhit.

D. un hi lu hn hp etanol, axit axetic v axit sunfuric c.

Cu 1.31 Cht hu c X c cng thc phn t l C5H6O4. Thu phn X bng dung dch NaOH d, thu c mt mui v mt ancol. Cng thc cu to ca X c th l

A. HOOCCOOCH2CH = CH2.

B. HOOCCH2COOCH = CH2.

C. HOOCCH = CHOOCCH3.

D. HOOCCH2CH = CHOOCH.

Cu 1.32 Thu phn este E c cng thc phn t C4H8O2 vi xc tc axit v c long, thu c 2 sn phm hu c X, Y (cha cc nguyn t C, H, O). T X c th iu ch trc tip ra Y bng mt phn ng duy nht. Cht E l: A. etyl axetat.

B. propyl fomiat.

C. isopropyl fomiat.

D. metyl propionat.

Cu 1.33 Cho cc cu sau :

a/ Cht bo thuc loi hp cht este.

b/ Cc este khng tan trong nc do chng nh hn nc.

c/ Cc este khng tan trong nc v ni ln trn mt nc l do chng khng to c lin kt hiro vi nc v nh hn nc.

d/ Khi un cht bo lng vi hiro c xc tc niken trong ni hp th chng chuyn thnh cht bo rn.

e/ Cht bo lng l cc triglixerit cha gc axit khng no trong phn t.

Nhng cu ng l p n no sau y ?

A. a, d, e.

B. a, b, d.

C. a, c, d, e.

D. a, b, c, d, e.

Cu 1.34 Ch s axit ca cht bo l

A. S mol KOH cn x phng ho mt gam cht bo.

B. S miligam NaOH cn trung ho cc axit t do c trong 1 gam cht bo.

C. S miligam KOH cn trung ho cc axit t do c trong 1 gam cht bo.

D. S lin kt ( c trong gc hirocacbon ca axit bo.

Cu 1.35 Cho a mol cht bo (C17H35COO)3C3H5 tc dng ht vi NaOH thu c 46g glixerol, a c gi tr l: A. 0,3 mol.

B. 0,4 mol.

C. 0,5 mol.

D. 0,6 mol.

Cu 1.36 un nng hn hp X v Y c cng thc C5H8O2 trong dung dch NaOH, thu sn phm 2 mui C3H5O2Na, C3H3O2Na v 2 sn phm khc. Cng thc cu to ca X v Y l

A. CH2=CHCH2CH2 COOH v CH3CH2CH=CHCOOH.

B. CH3CH2COOCH=CH2 v CH2=CHCOOCH2CH3.

C. CH3CH(OH)CH(OH)CH=CH2 v CH2=CHCH2CH2COOH.

D. O=HCCH2CH2CH2CH=O v O=HCCH(OH)CH2CH=CH2.

Cu 1.37 T nguyn liu u l eten v benzen (xc tc v iu kin phn ng c ), iu ch c ba polime gm polistiren, polibutaien v poli(butaien-stiren), cn thc hin s lng phn ng ho hc t nht l:

A. 5.

B.6.

C. 7.

D. 8

Cu 1.38 Cho 10 gam hn hp X gm etanol v etyl axetat tc dng va vi 50g dung dch natri hiroxit 4%. Phn trm khi lng ca etyl axetat trong hn hp bng: A. 22%.B. 44%.

C. 50%.

D. 51%.

Cu 1.39 Trong phng th nghim c cc ho cht c dng lm thuc th gm: (1) dd brom; (2) dd NaOH; (3) dd AgNO3/NH3; (4) axit axetic; (5) cn iot. phn bit 3 este: anlyl axetat, vinyl axetat v etyl fomiat cn phi dng cc thuc th l A. 1, 2, 5.B. 1, 3.

C. 2, 3.

D. 1, 2, 3.

Cu 1.40 Cho 0,15 mol este n chc X (C5H8O2) tc dng va vi dung dch NaOH, c cn dung dch sau phn ng thu 21g mui khan. Cng thc cu to ca X l

DCu 1.41 F l cht hu c c cng thc phn t C5H8O2. F tc dng vi NaOH to ra mt ancol T, khi t chy mt th tch ancol T cn 3 th tch oxi (o cng iu kin). Axit to F l

A. axit axetic.

B. axit valeric.

C. axit acrylic.

D. axit fomic.

Cu 1.42 t chy hon ton m g hn hp cc este no, n chc, mch h. Sn phm chy c dn vo bnh ng dung dch nc vi trong d thy khi lng bnh tng 6,2g. S mol H2O sinh ra v khi lng kt ta to ra l: A. 0,1 mol; 12g.

B. 0,1 mol; 10g.

C. 0,01mol; 10g. D. 0,01 mol; 1,2g.

Cu 1.43 Cho ancol X tc dng vi axit Y thu c este Z. lm bay hi 8,6g Z thu c th tch bng th tch ca 3,2g O2 cng iu kin nhit v p sut. Bit MY > MX. Tn gi ca Y l

A. axit fomic.

B. axit metacrylic.

C. axit acrylic.

D. axit axetic.

Cu 1.44 Cho hn hp E gm 2 este c cng thc phn t C4H8O2 v C3H6O2 tc dng hon ton vi NaOH d thu c 6,14g hn hp 2 mui v 3,68g mt ancol Y duy nht c t khi so vi oxi l 1,4375. Cng thc cu to mi este v s gam tng ng l

A. C2H5COOCH3 (6,6g); CH3COOCH3 (1,48g).

B. CH3COOC2H5 (4,4g); HCOOC2H5 (2,22g).C. C2H5COOCH3 (4,4g); CH3COOCH3 (2,22g).

D. CH3COOC2H5 (6,6g); HCOOC2H5 (1,48g).

Cu 1.45 t chy 6g este E thu c 4,48 lt CO2 (ktc) v 3,6g H2O. Bit E c phn ng trng gng vi dung dch AgNO3/NH3. Vy cng thc cu to ca E l

A. CH3COO CH2CH2CH3. B. HCOO CH2CH2CH3. C. HCOO C2H5. D. HCOOCH3.Cu 1.46 Thu phn hon ton 8,8g este n chc, mch h X vi 100ml dung dch KOH 1M (va ) thu c 4,6g mt ancol Y. Tn gi ca X l: A. Etyl fomiat. B. Etyl propionat. C. Etyl axetat.D. Propyl axetat.

Cu 1.47 Lm bay hi 7,4g mt este X thu c mt th tch hi bng th tch ca 3,2g kh oxi cng iu kin nhit , p sut. Khi thc hin phn ng x phng ho 7,4g X vi dung dch NaOH (phn ng hon ton) thu c sn phm c 6,8g mui. Tn gi ca X l: A. etyl fomiat.B. vinyl fomiat. C. metyl axetat. D. isopropyl fomiat.

Cu 1.48 t chy hon ton 2,28g X cn 3,36 lt oxi (ktc) thu hn hp CO2 v H2O c t l th tch tng ng 6 : 5. Nu un X trong dung dch H2SO4 long thu c axit Y c v ancol n chc Z. Cng thc ca X l

A. C2H5COOC2H5.

B. CH3COOCH3.

C. C2H3COOC2H5.D. C2H3COOC3H7.Cu 1.49 t hon ton 4,2g mt este E thu c 6,16g CO2 v 2,52g H2O. Cng thc cu to ca E l : A. HCOOC2H5.

B. CH3COOC2H5.

C. CH3COOCH3.D. HCOOCH3.Cu 1.50 un nng 0,1 mol X vi dung dch NaOH (), thu 13,4g mui ca axit a chc v 9,2g ancol n chc, c th tch 8,32 lt ( 1270C, 600 mmHg). X c cng thc

A. CH(COOCH3)3.

B. C2H4(COOC2H5)2.

C. (COOC2H5)2.

D. (COOC3H5)2.

Cu 1.51 X phng ho hon ton 0,1 mol este X (ch cha 1 loi nhm chc) cn 0,3 mol NaOH, thu 9,2g ancol Y v 20,4g mt mui Z (cho bit 1 trong 2 cht Y hoc Z l n chc). Cng thc ca X l

A. CH3CH2OOC-COOCH2CH3.B. C3H5(OOCH)3. C. C3H5(COOCH3)3.D. C3H5(COOCH3)3.

Cu 1.52 x phng ho hon ton 19,4g hn hp 2 este n chc X, Y cn 200ml dung dch NaOH 1,5M. Sau khi phn ng hon ton, c cn dung dch thu c hn hp 2 ancol ng ng k tip nhau v m g mt mui khan duy nht Z. CTCT, % khi lng ca X trong hn hp ban u v gi tr m l

A. HCOOCH3 66,67%; 20,4g.

B. HCOOC2H5 16,18%; 20,4g.

C. CH3COOCH3 19,20%; 18,6g.

D. CH3CH2COOCH3; 19,0g.

Cu 1.53 Cho 21,8g cht hu c X ch cha mt loi nhm chc tc dng vi 1 lt dung dch NaOH 0,5M thu c 24,6g mui v 0,1 mol mt ancol Y. Lng NaOH d c trung ho ht bi 0,2 mol HCl. Cng thc cu to thu gn ca X l: A. CH3C(COOCH3)3.

B. (C2H5COO)3C2H5.

C. (HCOO)3C3H5.D. (CH3COO)3C3H5.Cu 1.54 Khi thu phn a g mt este X thu c 0,92g glixerol, 3,02g natri linoleat (C17H31COONa) v m g mui natri oleat (C17H33COONa). Gi tr ca a, m ln lt l

A. 8,82g ; 6,08g.

B. 7,2g ; 6,08g.

C. 8,82g ; 7,2g.

D. 7,2g ; 8,82g.

Cu 1.55 Trong cht bo lun c mt lng axit bo t do. S miligam KOH dng trung ho lng axit bo t do trong mt gam cht bo gi l ch s axit ca cht bo. trung ho 2,8g cht bo cn 3ml dung dch KOH 0,1M. Ch s axit ca mu cht bo trn l: A. 8.B. 15.

C. 6.

D. 16.

Cu 1.56 Tng s miligam KOH trung ho ht lng axit t do v x phng ho ht lng este trong mt gam cht bo gi l ch s x phng ho ca cht bo. Vy ch s x phng ho ca mu cht bo c ch s axit bng 7 cha 89% tristearin l A. 185.B. 175.

C. 165.

D. 155.

Cu 1.57 Khi thu phn (xc tc axit) mt este thu c glixerol v hn hp cc axit stearic v axit panmitic theo t l mol tng ng bng 2 : 1. Este c th c cng thc cu to no sau y?

A.

B.

C.

D.

Cu 1.58 Trong cht bo lun c mt lng axit bo t do. Khi thu phn hon ton 2,145kg cht bo, cn dng 0,3kg NaOH, thu 0,092kg glixerol, v mg hn hp mui Na. Khi lng x phng 60% (v khi lng) thu c l:

A. 7,84kg.B. 3,92kg.

C. 2,61kg.

D. 3,787kg.

Cu 1.59 Trong thnh phn ca mt loi sn c cc triglixerit l trieste ca glixerol vi axit linoleic C17H31COOH v axit linolenic C17H29COOH. Cng thc cu to c th c ca cc trieste l : (1) (C17H31COO)2C3H5OOCC17H29; (2) C17H31COOC3H5(OOCC17H29)2; (3) (C17H31OOC)2C3H5OOCC17H29; (4) (C17H31OCO)2C3H5COOC17H29. Nhng cng thc ng l: A. (1), (2), (3), (4).B. (1), (2).

C. (1), (2), (4).

D. (2), (3), (4).

Cu 1.60 un si a g mt triglixerit X vi dung dch KOH cho n khi phn ng hon ton, thu c 0,92g glixerol v 9,58g hn hp Y gm mui ca axit linoleic v axit oleic. Gi tr ca a l

A. 8,82g.

B. 9,91g.

C. 10,90g.

D. 8,92g.

Cu 1.61 Khi lng x phng thu c t 1 tn m ng vt (cha 50% trioleoyl glixerol, 30% tripanmitoyl glixerol (panmitin) v 20% tristearoyl glixerol (stearin) v khi lng) khi x phng ho bng natri hiroxit, gi s hiu sut qu trnh t 90% l : A. 988kg.B. 889,2kg.

C. 929,3kg.

D. 917kg.

Cu 1.62 Thu phn hon ton cht bo E bng dung dch NaOH thu c 1,84g glixerol v 18,24g mui ca axit bo duy nht. Cht bo l

A. (C17H33COO)3C3H5.B. (C17H35COO)3C3H5. C. (C15H31COO)3C3H5. D. (C15H29COO)3C3H5.

Cu 1.63 t chy 3,7g cht hu c X cn dng 3,92 lt O2 (ktc) thu c CO2 v H2O c t l mol 1:1. Bit X tc dng vi KOH to ra 2 cht hu c. Vy cng thc phn t ca X l

A. C3H6O2.

B. C4H8O2.

C. C2H4O2.

D. C3H4O2.

Cu 1.64 un nng 215g axit metacrylic vi 100g metanol (vi Hp = 60%). Khi lng este metyl metacrylat thu c l: A. 100g.

B. 125g.

C. 150g.

D. 175g.

Cu 1.65 Mt cht hu c X c . Khi un nng X vi dung dch NaOH to ra mui c khi lng ln hn khi lng X phn ng. Tn X l

A. iso propyl fomiat.

B. metyl axetat.

C. etyl axetat.

D. metyl propionat.Cu 1.66 Este X c . Thu phn X to nn 2 hp cht hu c X1, X2. Nu t chy cng mt lng X1 hay X2 s thu c cng mt th tch CO2 ( cng nhit v p sut). Tn gi ca X l: A. etyl fomiat.

B. isopropyl fomiat.

C. metyl propionat.

D. etyl axetat.Cu 1.67 X phng ho 22,2g hn hp gm 2 este ng phn, cn dng 12g NaOH, thu 20,492g mui khan (hao ht 6%). Trong X chc chn c mt este vi cng thc v s mol tng ng l

A. H COOC2H5 0,2 mol.B. CH3 COOCH3 0,2 mol. C. H COOC2H5 0,15 mol D. CH3 COOC2H3 0,15 mol.

Cu 1.68 un nng 3,21g hn hp X gm hai cht hu c Y v Z cng nhm chc vi dung dch NaOH d, thu c hn hp mui natri ca hai axit ankanoic k tip nhau trong dy ng ng v mt cht lng L (t khi hi ). Cht L phn ng vi CuO un nng cho sn phm c phn ng trng gng. Cho lng cht L phn ng vi Na c 0,015 mol H2. Nhn nh no sau y l sai ?

A. Nung mt trong hai mui thu c vi NaOH (vi ti xt) s to metan.

B. Tn gi ca L l ancol anlylic.C. Trong hn hp X, hai cht Y v Z c s mol bng nhau.

D. t chy hn hp X s thu c .

Cu 1.69 Tng s lin kt ( v s vng trong phn t este (khng cha nhm chc no khc) to bi glixerol v axit aipic l: A. 0.

B. 6.

C. 7.

D. 8.

Cu 1.70 Cho 7,4g este E thu phn trong dung dch NaOH th thu c 8,2g mui natriaxetat. Cng thc ca este E l:A. (CH3COO)2C2H4.

B. (CH3COO)3C3H5. C. CH3(CH2)2COOCH3. D. CH3COOCH3.

Cu 1.71 X l mt este hu c n chc, mch h. Cho mt lng X tc dng hon ton vi dung dch NaOH va , thu c mui c khi lng bng khi lng este ban u. X l

A. H-COOCH3.

B. CH2=CHCOOCH3. C. C17H35COO(CH2)16CH3. D. CH3COOCH3.

Cu 1.72 Thu phn este X (C4H6O2) trong mi trng axit ta thu c mt hn hp cc cht u c phn ng trng gng. Cng thc cu to ca X l

A. CH2 = CH COO CH3. B. CH3 CH = CH OCOH. C. CH2 = CH OCOCH3. D. HCOO CH2CH = CH2.

Cu 1.73 Mt este X to bi axit n chc v ancol n chc c t khi vi He bng 22. Khi un nng X vi dung dch NaOH to ra mui c khi lng bng lng este phn ng. Tn X l

A.Etyl axetat.

B. Metyl axetat.

C. Isopropyl fomiat.

D. Metyl propionat.

Cu 1.74 un hp cht X vi H2O (xc tc H+) c axit hu c Y () v ancol Z. Cho hi Z qua ng bt ng Cu xc tc un nng th sinh ra cht T c kh nng tham gia phn ng trng gng. t chy hon ton 2,8g X th cn 3,92 lt O2 (ktc) v thu c . Bit Z l ancol n chc. Tn gi ca X, Y ln lt lA. axit acrylic; ancol anlylic.

B. axit acrylic; ancol benzylic.

C. axit valeric; ancol etanol.

D. axit metacrylic; ancol isopropylic.

Cu 1.75 X phng ho mt este no n chc E bng mt lng va dung dch NaOH ch thu c mt sn phm X duy nht. Nung X vi vi ti xt thu c ancol Y v mui v c Z. t chy hon ton Y thu c CO2 v H2O c t l th tch 3 : 4. Bit oxi ho X bng CuO un nng c sn phm c phn ng trng gng. Cng thc cu to ca E l

A. CH3OCO(CH=CH2.B. CH2(CH2

C=O.

CH2(O

C. C2H5(CH(C=O.D. CH3(CH(CH2

O

O ( C=O.

Cu 1.76 3,52g mt este E ca axit cacboxylic no n chc v ancol no n chc (c hai u mch h) phn ng va ht vi 40ml dung dch NaOH 1M, thu c cht X v cht Y. t chy 0,6g cht Y cho 1,32g CO2. Khi b oxi ho cht Y chuyn thnh anehit. CTCT ca este E v cht Y l (gi s cc phn ng u t 100%)

A. HCOOCH(CH3)CH3; CH3CH2OH.

B. C2H5COOCH3; CH3CH2OH.

C. CH3COOCH2CH3; CH3CH2OH.

D. HCOOCH2CH2CH3; CH3CH2CH2OH

Cu 1.77 Thu phn hon ton 0,1 mol este E (cha mt loi nhm chc) cn dng va 100g dung dch NaOH 12%, thu c 20,4g mui ca axit hu c X v 9,2g ancol Y. Xc nh cng thc phn t v gi tn X, Y. Bit rng mt trong 2 cht (X hoc Y) to thnh este l n chc.

A. X: C3H6O2, axit propionic; Y: C3H8O3, glixerol. B. X: CH2O2, axit fomic; Y: C3H8O3, glixerol.

C. X: C2H4O2, axit axetic; Y: C3H8O3, glixerol.D. X: C2H4O2, axit axetic; Y: C3H8O, ancol propylic.

Cu 1.78 Cho 12,9g mt este n chc (mch h) tc dng va vi 150ml dung dch KOH 1M, sau phn ng thu c mt mui v mt anehit. CTCT ca este khng th l

A. HCOOCH=CHCH3 v CH3COOCH=CH2.

B. HCOOCH2CH=CH2.

C. CH3COOCH=CH2.

D. HCOOCH=CHCH3.

Cu 1.79 t chy 1,60g mt este E n chc c 3,52g CO2 v 1,152g H2O. Cho 10g E tc dng vi lng NaOH va , c cn dung dch sau phn ng thu c 14,00g mui khan G. Cho G tc dng vi axit v c long thu c G1 khng phn nhnh. S lng CTCT tho mn tnh cht nu ca E l: A. 4.B. 6.C. 2. D. 8.

Cu 1.80 x phng ho 100kg du n thuc loi trioleoyl glixerol c ch s axit bng 7 cn 14,10kg natri hiroxit. Gi s phn ng xy ra hon ton, khi lng mui natri thu c l

A. 108,6kg.

B. 103,445kg.

C. 118,245kg.

D. 117,89kg.

Cu 1.81 Khi thu phn (trong mi trng axit) mt este c cng thc phn t C7H6O2 sinh ra hai sn phm X v Y. X kh c AgNO3 trong amoniac, cn Y tc dng vi nc brom sinh ra kt ta trng. Tn gi ca este l: A. phenyl fomiat.

B. benzyl fomiat.C. vinyl pentanoat.D. anlyl butyrat.

Cu 1.82 Mun thu phn 5,6g hn hp etyl axetat v etyl fomiat cn 25,96ml NaOH 10%, (D = 1,08g/ml). Thnh phn % khi lng ca etyl axetat trong hn hp l: A. 47,14%.B. 52,16%.C. 36,18%.D. 50,20%.

Cu 1.83 un a gam este mch khng phn nhnh CnH2n+1COOC2H5 vi 100ml dd KOH. Sau phn ng phi dng 25ml dd H2SO4 0,5M trung ho KOH cn d. Mt khc mun trung ho 20ml dd KOH ban u phi dng 15ml dd H2SO4 ni trn. Khi a = 5,8g th tn gi ca este l

A. etyl axetat.

B. etyl propionat.C. etyl valerat.

D. etyl butyrat.

Cu 1.84 Thuc chng mui (DEP) thu c khi cho axit thm (X) tc dng vi ancol Y. Mun trung ho dung dch cha 0,9035g X cn 54,5ml NaOH 0,2M. Trong dung dch ancol Y 94% (theo khi lng) t s mol . Bit rng . CTCT thu gn ca X, Y ln lt l

A. C2H5OC6H4COOC2H5.

B. C2H5OOCC3H4COOC2H5.

C. C2H5OOCC6H4COOC2H5

D. CH3C6H4COOC2H5.

Cu 1.85 thu phn 0,01 mol este ca mt ancol a chc vi mt axit cacboxylic n chc cn dng 1,2g NaOH. Mc khc thu phn 6,35g este cn 3g NaOH v thu c 7,05g mui. CTCT ca este l

A. (CH2=C(CH3)COO)3C3H5.B. (CH2=CHCOO)3C3H5.C. (CH3COO)2C2H4.D. (HCOO)3C3H5.

Cu 1.86 un 20g lipit vi dung dch cha 10g NaOH. Sau khi kt thc phn ng, trung ho dung dch thu c, cn dng 90ml dung dch HCl 0,2M. Phn t khi trung bnh ca cc axit bo trong thnh phn cu to ca lipit v ch s x phng ho ca lipit v ln lt l

A. 228; 190.

B. 286; 191.

C. 273; 196.

D. 287; 192.

Cu 1.87 x phng ho hon ton 2,22g hn hp hai este l ng phn X v Y, cn dng 30ml dd NaOH 1M. Khi t chy hon ton hn hp hai este th thu c kh CO2 v hi nc vi t l th tch . Tn gi ca hai este l

A. metyl axetat; etyl fomiat.

B. propyl fomiat; isopropyl fomiat.

C. etyl axetat; metyl propionat.

D. metyl acrylat; vinyl axetat.

Cu 1.88 un nng hn hp hai cht ng phn (X, Y) vi dung dch H2SO4 long, thu c hai axit ankanoic k tip nhau trong dy ng ng v hai ankanol. Ho tan 1g hn hp axit trn vo 50ml NaOH 0,3M, trung ho NaOH d phi dng 10ml HCl 0,5M. Khi cho 3,9g hn hp ancol trn tc dng ht vi Na thu c 0,05 mol kh. Bit rng cc gc hirocacbon u c phn nhnh cao nht. CTCT ca X, Y l

A. (CH3)2CH-COOC2H5 v (CH3)3COOCH3.

B. HCOOC(CH3)3 v CH3COOCH(CH3)2.

C. CH3COOC(CH3)3 v CH3CH2COOCH(CH3)2.D. (CH3)2CH-COOC2H5 v (CH3)2CHCH2COOCH3.

Cu 1.89 E l este ca glixerol vi mt s axit monocacboxylic no, mch h. un 7,9g A vi NaOH cho ti phn ng hon ton, thu c 8,6g hn hp mui. Cho hn hp mui tc dng H2SO4 d c hn hp 3 axit X, Y, Z; trong X v Y l ng phn ca nhau; Z l ng ng k tip ca Y v c mch cacbon khng phn nhnh. S CTCT ca E v CTCT ca cc axit X, Y, Z ln lt l

A. 3; (CH3)2CHCOOH; CH3CH2CH2COOH; CH3(CH2)3COOH.

B. 2; (CH3)3CCOOH; CH3CH2CH2CH2COOH; (CH3)2CHCOOH.

C. 2; (CH3)2CHCOOH; CH3CH2CH2COOH; CH3(CH2)3COOH.

D. 3; (CH3)3CCOOH; CH3CH2CH2CH2COOH; (CH3)2CHCOOH.

Cu 1.90 Mun tng hp 120kg poli(metyl metacrylat) th khi lng ca axit v ancol tng ng cn dng l bao nhiu. Bit hiu sut qu trnh este ho v qu trnh trng hp ln lt l 60% v 80%.

A. 85,5kg v 41kg.

B. 65kg v 40kg.

C. 170kg v 80kg.

D. 215kg v 80kg.

Cu 1.91 S gam iot c th cng vo lin kt bi trong mch cacbon ca 100g cht bo c gi l ch s iot ca cht bo. Ch s iot ca cht bo c to nn t axit linoleic l

A. 86,868.

B. 90,188.

C. 188,920.

D. 173,736.

Cu 1.92 Mt mu cht bo cha gm trilein v tripanmitin c ch s iot l 19,05. Phn trm v khi lng ca mt trong hai glixerit phi l

A. 20,18%.

B. 22,1%.

C. 18,20%.

D. 20,19%.CHNG II. CACBOHIRATCu 2.1 Tm t thch hp in vo ch trng trong on vn sau:

dng mch h glucoz v fructoz u c nhm cacbonyl, nhng trong phn t glucoz nhm cacbonyl nguyn t C s , cn trong phn t fructoz nhm cacbonyl nguyn t C s. Trong mi trng baz, fructoz c th chuyn ho thnh v

A. 1, 2, glucoz, ngc li.B. 2, 2, glucoz, ngc li. C. 2, 1, glucoz, ngc li. D. 1, 2, glucoz, mantoz.

Cu 2.2 Cacbohirat l g?

A. Cacbohirat l nhng hp cht hu c a chc v a s chng c cng thc chung l Cn(H2O)m.

B. Cacbohirat l nhng hp cht hu c tp chc v a s chng c cng thc chung l Cn(H2O)m.

C. Cacbohirat l nhng hp cht hu c tp chc.

D. Cacbohirat l nhng hp cht hu c a chc v a s chng c cng thc chung l Cn(H2O)n.

Cu 2.3 C my loi cacbohirat quan trng?A. 1 loi.

B. 2 loi.C. 3 loi.D. 4 loi.

Cu 2.4 Nhng th nghim no chng minh c cu to phn t ca glucoz?

A. phn ng vi Na v vi dung dch AgNO3 trong amoniac.

B. phn ng vi NaOH v vi dung dch AgNO3 trong amoniac.

C. phn ng vi CuO v vi dung dch AgNO3 trong amoniac.

D. phn ng vi Cu(OH)2 v vi dung dch AgNO3 trong amoniac.

Cu 2.5 trng bc mt chic gng soi, ngi ta phi un nng dung dch cha 36g glucoz vi lng va dung dch AgNO3 trong amoniac. Khi lng bc sinh ra bm vo mt knh ca gng v khi lng AgNO3 cn dng ln lt l (bit cc phn ng xy ra hon ton)

A. 68,0g; 43,2g.

B. 21,6g; 68,0g.

C. 43,2g; 68,0g.

D. 43,2g; 34,0g.

Cu 2.6 Phng n no di y c th phn bit c saccaroz, tinh bt v xenluloz dng bt?

A. Cho tng cht tc dng vi dung dch HNO3/H2SO4.

B. Cho tng cht tc dng vi dung dch iot.

C. Ho tan tng cht vo nc, sau un nng v th vi dung dch iot.

D. Cho tng cht tc dng vi vi sa Ca(OH)2.

Cu 2.7 phn bit cc dung dch glucoz, saccaroz v anehit axetic c th dng cht no trong cc cht sau lm thuc th ?A. Cu(OH)2/OH(.

B. NaOH.

C. HNO3.

D. AgNO3/NH3.

Cu 2.8 C bn l mt nhn cha: Glixerol, ancol etylic, glucoz v axit axetic. Thuc th no sau y c th dng phn bit cc dung dch trong tng l trn ?

A. [Ag(NH3)2]OH.

B. Na kim loi.

C. Cu(OH)2 trong mi trng kim.D. Nc brom.

Cu 2.9 phn bit cc cht: Glucoz, glixerol, anehit axetic, lng trng trng v ru etylic, c th ch dng mt thuc th no sau y?

A. dung dch HNO3.

B. Cu(OH)2/OH(.C. dung dch AgNO3/NH3.D. dung dch brom.

Cu 2.10 Chn cch phn bit cc dung dch sau y: Lng trng trng, h tinh bt, glixerol.

A. Iot lm h tinh bt ho xanh, glixerol tc dng vi Cu(OH)2 nhit thng to dung dch xanh lam c trng, cn li lng trng trng.

B. Glixerol tc dng Cu(OH)2 nhit thng to dung dch xanh lam c trng, lng trng trng tc dng Cu(OH)2 cho mu xanh tm, cn li h tinh bt.

C. Iot lm h tinh bt ho xanh, khi un nng lng trng trng ng t, cn li glixerol.

D. C B, C u ng.

Cu 2.11 C 4 dung dch long khng mu gm: Lng trng trng, glixerol, KOH v axit axetic. Ch dng mt thuc th no sau y phn bit chng.

A. dung dch HCl.

B. dung dch CuSO4. C. dung dch KMnO4.D. dung dch HNO3 c.Cu 2.12 Chn cu pht biu sai:

A. Saccaroz l mt isaccarit.

B. Tinh bt v xenluloz u l polisaccarit, ch khc nhau v cu to ca gc glucoz.

C. Khi thu phn n cng saccaroz, tinh bt v xenluloz u cho mt loi monosaccarit.

D. Khi thu phn n cng, tinh bt v xenluloz u cho glucoz.

Cu 2.13 Cng l cht rn kt tinh, khng mu, khng mi, d tan trong nc, c v ngt l tnh cht vt l v trng thi t nhin ca nhm cht no sau y?

A. glucoz v saccaroz.B. glucoz v tinh bt. C. glucoz v xenluloz.D. saccaroz v tinh bt.

Cu 2.14 Cho cc cht glucoz, fructoz, saccaroz, tinh bt, xenluloz. Cht va c tnh cht ca ancol a chc, va c tnh cht ca anehit l

A. ch c glucoz. B. glucoz v fructoz. C. glucoz, fructoz v saccaroz. D. tt c cc cht cho. Cu 2.15 trng bc mt s rut phch, ngi ta phi dng 100g saccaroz. Khi lng AgNO3 cn dng v khi lng Ag to ra ln lt l (gi thit rng, s chuyn ho ca fructoz l khng ng k v hiu sut cc phn ng u t 90%): A. 88,74g; 50,74g.B. 102,0g; 52,5g. C. 52,5g; 91,8g.

D. 91,8g; 64,8g.

Cu 2.16 Khi t chy hon ton mt hp cht hu c thu c hn hp kh CO2 v hi nc c t l mol l 1:1. Cht ny c th ln men ru (ancol). Cht l cht no trong cc cht sau ?

A. axit axetic.

B. glucoz.

C. sacacroz.

D. hex-3-en.

Cu 2.17 Khi thu phn 1kg bt go c 80% tinh bt, th khi lng glucoz thu c l bao nhiu ? Gi thit rng, phn ng xy ra hon ton.A. 0,80kg.

B. 0,90kg.

C. 0,99kg.

D. 0,89kg.

Cu 2.18 Tnh khi lng glucoz to thnh khi thu phn 1kg mn ca c 50% xenluloz. Gi thit hiu sut phn ng l 80%.A. 0,555kg.

B. 0,444kg.

C. 0,500kg.

D. 0,690kg.

Cu 2.19 Nhm gluxit u tham gia phn ng thu phn l

A. Saccaroz, mantoz, glucoz.

B. Saccaroz, fructoz, xenluloz.C. Mantoz, tinh bt, xenluloz.

D. Saccaroz, glucoz, tinh bt.

Cu 2.20 Nhm gluxit u c kh nng tham gia phn ng trng gng l

A. Glucoz, fructoz, saccaroz. B. Glucoz, fructoz, tinh bt.

C. Glucoz, fructoz, xenluloz. D. Glucoz, fructoz, mantoz.

Cu 2.21 Cho glucoz ln men to thnh ancol, kh CO2 to thnh c dn qua dung dch nc vi trong d, thu c 50g kt ta, bit hiu sut ln men l 80%, khi lng ancol thu c l

A. 23,0g.

B. 18,4g.

C. 27,6g.

D. 28,0g.

Cu 2.22 Chn s phn ng ng ca glucoz

A. C6H12O6 + Cu(OH)2 kt ta gch

B. C6H12O6 CH3CH(OH)COOH

C. C6H12O6 + CuO Dung dch mu xanh

D. C6H12O6 C2H5OH + O2

Cu 2.23 Nhm gluxit khi thu phn hon ton u ch to thnh glucoz l:

A. Saccaroz, mantoz, tinh bt.

B. Saccaroz, mantoz, xenluloz.

C. Mantoz, tinh bt, xenluloz.

D. Saccaroz, mantoz, tinh bt, xenluloz.

Cu 2.24 Pht biu no sau y khng ng ?

A. Glucoz v fructoz l ng phn cu to ca nhau.

B. Metyl ( - glucozit khng th chuyn sang dng mch h.

C. Trong dung dch, glucoz tn ti dng mch vng u tin hn dng mch h.

D. C th phn bit glucoz v fructoz bng phn ng trng bc.

Cu 2.25 Bit CO2 chim 0,03% th tch khng kh, th tch khng kh (ktc) cn cung cp cho cy xanh quang hp to 162g tinh bt l A. 112.103 lt.

B. 448.103 lt.

C. 336.103 lt.

D. 224.103 lt.

Cu 2.26 Glucoz tc dng c vi tt c cht trong nhm cht no sau y?

A. H2/Ni , nhit ; Cu(OH)2; [Ag(NH3)2]OH; H2O/H+, nhit .

B. [Ag(NH3)2]OH; Cu(OH)2; H2/Ni, un nng; CH3COOH/H2SO4 c, un nng.

C. H2/Ni , nhit ; [Ag(NH3)2]OH; NaOH; Cu(OH)2.

D. H2/Ni , nhit ; [Ag(NH3)2]OH; Na2CO3; Cu(OH)2. Cu 2.27 Chn cu pht biu sai:

A. Phn bit glucoz v saccaroz bng phn ng trng gng.

B. Phn bit mantoz v saccaroz bng phn ng trng gng.

C. Phn bit tinh bt v xenluloz bng I2.

D. Phn bit saccaroz v glixerol bng Cu(OH)2.

Cu 2.28 Chn cu pht biu ng:

A. Phn bit glucoz v fructoz bng phn ng trng gng.

B. Tinh bt c cu trc phn t mch khng phn nhnh.

C. Dung dch mantoz c tnh kh v b thu phn thnh glucoz.

D. Phn bit saccaroz v glixerol bng phn ng thu phn.

Cu 2.29 Phng trnh: 6nCO2 + 5nH2O (C6H10O5)n + 6nO2, l phn ng ho hc chnh ca qu trnh no sau y? A. qu trnh h hp.B. qu trnh quang hp.

C. qu trnh kh.D. qu trnh oxi ho.

Cu 2.30 Cho s phn ng: Thuc sng khng khi X Y sobit. Tn gi X, Y ln lt l

A. xenluloz, glucoz. B. tinh bt, etanol.

C. mantoz, etanol. D. saccaroz, etanol.

Cu 2.31 Phn ng kh glucoz l phn ng no sau y ?

A. Glucoz + H2/Ni , to. B. Glucoz + Cu(OH)2.C. Glucoz + [Ag(NH3)2]OH.D. Glucoz etanol.

Cu 2.32 iu ch 45g axit lactic t tinh bt v qua con ng ln men lactic, hiu sut thu phn tinh bt v ln men lactic tng ng l 90% v 80%. Khi lng tinh bt cn dng l: A. 50g. B. 56,25g. C. 56g. D. 60g.

Cu 2.33 Phn ng chuyn glucoz, fructoz thnh nhng sn phm ging nhau l

A. phn ng vi Cu(OH)2.

B. phn ng trng gng.

C. phn ng vi H2/Ni. to.

D. phn ng vi kim loi Na.

Cu 2.34 Thuc th phn bit glucoz vi fructoz l

A. [Ag(NH3)2]OH.

B. Cu(OH)2.

C. dung dch Br2.

D. H2.

Cu 2.35 Cacbohirat (gluxit) l nhng hp cht hu c tp chc v c cng thc chung l

A. Cn(H2O)m.

B. C.nH2O. C. CxHyOz.

D. R(OH)x(CHO)y.

Cu 2.36 Cng thc phn t v cng thc cu to ca xenluloz ln lt l

A. (C6H12O6)n, [C6H7O2(OH)3]n.

B. (C6H10O5)n, [C6H7O2(OH)3]n.

C. [C6H7O2(OH)3]n, (C6H10O5)n.

D. (C6H10O5)n, [C6H7O2(OH)2]n.

Cu 2.37 Mt polisaccarit (C6H10O5)n c khi lng phn t l 162000u, n c gi tr l

A. 900.

B. 950. C. 1000.

D. 1500.

Cu 2.38 Gluxit khng th thu phn c na l

A. Glucoz, mantoz.B. Glucoz, tinh bt. C. Glucoz, xenluloz.

D. Glucoz, fructoz.

Cu 2.39 Cacbohirat khi thu phn to ra 2 phn t monosaccarit l

A. Saccaroz, tinh bt.B. saccaroz, xenluloz. C. Mantoz, saccaroz. D. Saccaroz, glucoz.

Cu 2.40 Saccaroz v glucoz c c im ging nhau l

A. u ly t c ci ng.

B. u tham gia phn ng trng gng.

C. u ho tan Cu(OH)2 nhit thng to dung dch mu xanh c trng.

D. u c trong bit dc huyt thanh ngt.

Cu 2.41 Polisaccarit khi thu phn n cng to ra nhiu monosaccarit l

A. Tinh bt, amiloz.B. Tinh bt, xenluloz. C. Xenluloz, amiloz.D. Xenluloz, amilopectin.

Cu 2.42 Cht khng phn ng vi glucoz lA. [Ag(NH3)2]OH.B. Cu(OH)2. C. H2/Ni. D. I2.

Cu 2.43 Trong mu ngi, nng ca glucoz c gi tr hu nh khng i lA. 0,1%.B. 0,2%. C. 0,3%.D. 0,4%.Cu 2.44 xc nh trong nc tiu ca ngi b bnh tiu ng c cha mt lng nh glucoz, c th dng 2 phn ng ho hc l

A. phn ng trng gng, phn ng cng hiro.B. phn ng trng gng, phn ng ln men ancol etylic.

C. phn ng trng gng, phn ng kh Cu(OH)2.D. phn ng trng gng, phn ng thu phn.

Cu 2.45 Sobit (sobitol) l sn phm ca phn ng

A. kh glucoz bng H2/Ni, to.

B. oxi ho glucoz bng [Ag(NH3)2]OH.

C. ln men ru etylic.

D. glucoz tc dng vi Cu(OH)2.

Cu 2.46 Gluxit chuyn ho thnh glucoz trong mi trng kim l

A. saccaroz.

B. mantoz. C. fructoz.

D. tinh bt.

Cu 2.47 Tinh bt trong go np cha khong 98% l

A. amiloz.

B. amilopectin. C. glixerol.

D. alanin.

Cu 2.48 Phn ng chng t glucoz c nhiu nhm OH cc nguyn t cacbon lin tip nhau l phn ng vi

A. dung dch AgNO3 trong dung dch NH3.

B. Cu(OH)2 nhit thng.

C. tc dng vi axit to este c 5 gc axit.

D. Cu(OH)2 nhit cao.

Cu 2.49 Phn ng chng minh glucoz c nhm chc anehit l

A. tc dng vi Cu(OH)2 to dung dch c mu xanh c trng.B. tc dng vi axit to sobitol.

C. phn ng ln men ru etylic.

D. phn ng trng gng.

Cu 2.50 Phn t glucoz tc dng vi Cu(OH)2 cho , vy trong phn t Tng t nh glucoz, cng vi hiro cho , b oxi ho bi trong mi trng baz. Cacbohirat l nhng v a s chng c cng thc chung l

(1) dung dch mu xanh lam; (2) c nhiu nhm OH; (3) v tr k nhau; (4) fructoz; (5) poliancol; (6) phc bc amoniac; (7) hp cht hu c tp chc; (8) Cn(H2O)m.

T hay cm t thch hp nhng ch trng trong cc cu on vn trn ln lt l

A. (2), (3), (1), (4), (5), (6), (7), (8).

B. (1), (2), (4), (5), (3), (6), (7), (8).

C. (1), (2), (3), (4), (5), (6), (7), (8).

D. (1), (2), (3), (4), (8), (6), (7), (5).

Cu 2.51 Khi no bnh nhn c truyn trc tip dung dch glucoz (cn c gi vi bit danh huyt thanh ngt).A. Khi bnh nhn c lng glucoz trong mu > 0,1%.

B. Khi bnh nhn c lng glucoz trong mu < 0,1%.

C. Khi bnh nhn c lng glucoz trong mu = 0,1%.

D. Khi bnh nhn c lng glucoz trong mu t 0,1% ( 0,2%.

Cu 2.52 Phng php iu ch etanol no sau y ch dng trong phng th nghim ?

A. Ln men glucoz.

B. Thu phn dn xut etyl halogenua trong mi trng kim.

C. Cho etilen tc dng vi dung dch H2SO4 long, nng.

D. Cho hn hp etilen v hi nc qua thp cha H3PO4.

Cu 2.53 Fructoz khng phn ng vi cht no sau y?

A. H2/Ni, to.

B. Cu(OH)2.

C. dung dch brom.

D. AgNO3/NH3.

Cu 2.54 Phn ng no sau y chng t glucoz c dng mch vng?

A. phn ng vi Cu(OH)2.

B. phn ng vi AgNO3/NH3.

C. phn ng vi H2/Ni, to.

D. phn ng vi CH3OH/HCl.

Cu 2.55 Phn ng tng hp glucoz trong cy xanh cn c cung cp nng lng l 2813kJ cho mi mol glucoz to thnh.

Nu trong mt pht, mi cm2 l xanh nhn c khong 2,09J nng lng mt tri, nhng ch 10% c s dng vo phn ng tng hp glucoz. Vi mt ngy nng (t 6h00 17h00) din tch l xanh l 1m2, lng glucoz tng hp c bao nhiu?A. 88,26g.

B. 88.32g.

C. 90,26g.

D. 90,32g.

Cu 2.56 Cho 10kg glucoz cha 10% tp cht, ln men thnh ancol etylic. Trong qu trnh ch bin, ancol b hao ht 5%. Khi lng ancol etylic thu c bng bao nhiu?A. 4,65kg.B. 4,37kg.C. 6,84kg.D. 5,56kg.

Cu 2.57 Ln men a g glucoz, cho ton b lng CO2 sinh ra hp th vo dung dch nc vi trong to thnh 10g kt ta. Khi lng dung dch so vi ban u gim 3,4g. Bit hiu sut ca qu trnh ln men l 90%, gi tr ca a l:

A. 12.

B. 13.

C. 14.

D. 15.

Cu 2.58 Cho 4 cht hu c X, Y, Z, T. Khi oxi ho hon ton tng cht u cho cng kt qu: C to ra 4,4g CO2 th km theo 1,8g H2O v cn mt th tch oxi va ng bng th tch CO2 thu c. T l phn t khi ca X, Y, Z, T ln lt l 6:1:3:2 v s nguyn t cacbon trong mi cht khng nhiu hn 6. Cng thc phn t ca X, Y, Z, T ln lt l

A. C6H12O6, C3H6O3, CH2O, C2H4O2.

B. C6H12O6, C3H6O3, C2H4O2, CH2O.

C. C6H12O6, CH2O, C3H6O3, C2H4O2.

D. C6H12O6, CH2O, C2H4O2, C3H6O3.

Cu 2.59 Saccaroz u tc dng c vi nhm cht no sau y ?

(1) H2/Ni, to; (2) Cu(OH)2; (3) [Ag(NH3)2]OH; (4) CH3COOH (H2SO4 c)

A. (1), (2).

B. (2), (4).

C. (2), (3).

D. (1), (4).

Cu 2.60 Mt cacbohirat (Z) c cc phn ng din ra theo s chuyn ho sau

Vy Z khng th l: A. glucoz.

B. saccaroz.

C. fructoz.

D. mantoz.

Cu 2.61 t chy hon ton 0,01 mol mt cacbohirat (X), thu c 5,28g CO2 v 1,98g H2O. Bit rng, t l khi lng H v O trong X l 0,125:1. Cng thc phn t ca X l

A. C6H12O6.

B. C12H24O12.

C. C12H22O11.

D. (C6H10O5)n.

Cu 2.62 Cho m g tinh bt ln men sn xut ancol etylic, ton b lng CO2 sinh ra cho qua dung dch Ca(OH)2 d, thu c 750,0g kt ta. Bit hiu sut mi giai on ln men l 80%. Gi tr m cn dng l bao nhiu ?

A. 940,0.

B. 949,2.

C. 950,5.

D. 1000,0.

Cu 2.63 Cho s chuyn i sau (E, Q, X, Y, Z l hp cht hu c, mi mi tn biu th mt phn ng ho hc). Cng thc ca E, Q, X, Y, Z ph hp vi s sau l

EQXYZ

A.C12H22O11C6H12O6CH3COOHCH3COOC2H5CH3COONa

B.(C6H10O5)nC6H12O6CH3CHOCH3COOHCH3COOC2H5

C.(C6H10O5)nC6H12O6CH3CHOCH3COONH4

D.A, B, C u sai.

Cu 2.64 Xenluloz trinitrat l cht d chy v n mnh, c u ch t xenluloz v axit nitric. Mun iu ch 29,70kg xenluloz trinitrat (hiu sut 90%) th th tch axit nitric 96% (D=1,52 g/ml) cn dng l bao nhiu ?A. 14,39 lt.

B. 15,00 lt.C. 15,39 lt.D. 24,39 lt.

Cu 2.65 Chn cu ng trong cc cu sau:

A. Xenluloz v tinh bt c phn t khi nh.

B. Xenluloz c phn t khi nh hn tinh bt.

C. Xenluloz v tinh bt c phn t khi gn bng nhau.

D. Xenluloz v tinh bt u c phn t khi rt ln, nhng phn t khi ca xenluloz ln hn nhiu so vi tinh bt.

Cu 2.66 sn xut ancol etylic ngi ta dng nguyn liu l mn ca v v bo t g cha 50% xenluloz. Nu mun iu ch mt tn ancol etylic, hiu sut qu trnh l 70% th khi lng nguyn liu xp x: A. 5031kg.

B. 5000kg.

C. 5100kg.

D. 6200kg.

Cu 2.67 Chn pht biu sai:

A. C th phn bit mantoz v ng nho bng v gic.

B. Tinh bt v xenluloz khng th hin tnh kh v trong phn t khng c nhm chc anehit (CH=O).

C. Tinh bt c phn ng mu vi iot do tinh bt c cu to mch dng xon c l rng.

D. C th phn bit glucoz v saccaroz bng phn ng vi Cu(OH)2/OH-, to.

Cu 2.68 Cho xenluloz phn ng vi anhirit axetic (xc tc H2SO4 c), thu c 11,1g hn hp X gm xenluloz triaxetat, xenluloz iaxetat v 6,6g CH3COOH. Thnh phn % theo khi lng ca xenluloz triaxetat v xenluloz iaxetat trong X ln lt l: A. 77% v 23%.B. 77,84% v 22,16%.C. 76,84% v 23,16%.D. 70% v 30%.

Cu 2.69 Ln men 1 tn tinh bt cha 5% tp cht tr thnh ancol etylic, hiu sut ca mi qu trnh ln men l 85%. Khi lng ancol thu c l: A. 400kg.

B. 398,8kg.

C. 389,8kg.

D. 390kg.

Cu 2.70 Pha long 389,8kg ancol etylic thnh ancol 40o, bit khi lng ring ca ancol etylic l 0,8 g/cm3. Th tch dung dch ancol thu c l: A. 1206,25 lt.B. 1246,25 lt.

C. 1218,125 lt.

D. tt c u sai.

Cu 2.71 Kh cacbonic chim t l 0,03% th tch khng kh. Mun to ra 500g tinh bt th cn bao nhiu lt khng kh (ktc) cung cp lng CO2 cho phn ng quang hp? Gi thit hiu sut qu trnh l 100%

A. 1382666,7 lt.

B. 1382600 lt.

C. 1402666,7 lt.D. tt c u sai.

Cu 2.72 t chy hon ton 0,0855g mt cacbohirat X. Sn phm c dn vo nc vi trong thu c 0,1g kt ta v dung dch A, ng thi khi lng dung dch tng 0,0815g. un nng dung dch A li c 0,1g kt ta na. Bit khi lm bay hi 0,4104g X thu c th tch kh ng bng th tch 0,0552g hn hp hi ancol etylic v axit fomic o trong cng iu kin. Cng thc phn t ca X l

A. C12H22O11.

B. C6H12O6.

C. (C6H10O5)n.

D. C18H36O18.CHNG III. AMIN AMINO AXIT PROTEINCu 3.1 S sp xp theo trt t tng dn tnh baz gia etylamin, phenylamin v amoniac ng l

A. amoniac < etylamin < phenylamin.

B. etylamin < amoniac < phenylamin.

C. phenylamin < amoniac < etylamin.

D. phenylamin < etylamin < amoniac.

Cu 3.2 Cch thun li nht nhn bit l ng dung dch CH3NH2 l

A. nhn bit bng mi.B. thm vi git dung dch H2SO4. C. thm vi git dung dch Na2CO3

D. a u a thu tinh nhng vo dung dch HCl m c ln pha trn ming l ng dung dch CH3NH2.

Cu 3.3 S lng ng phn ng vi cng thc phn t C3H9N l: A. 2.

B. 3.

C. 4. D. 5.

Cu 3.4 S lng ng phn amin bc 2 ng vi cng thc phn t C4H11N l

A. 2.

B. 3.

C. 4.

D. 5.

Cu 3.5 S lng ng phn amin c cha vng benzen ng vi cng thc phn t C7H9N l

A. 2.

B. 3.

C. 4.

D. 5.

Cu 3.6 Amino axit l mt hp cht hu c tp chc, trong phn t ca n va c nhm (1)va c nhm (2)nn va c tnh cht (3)va c tnh cht (4). Amino axit thng tn ti di dng (5)cn bng vi dng (6)

(1)(2)(3)(4)(5)(6)

A.amincacbonyloxi hoAxitphn tphn t

B.aminocacboxylbazAxition lng ccphn t

C.hiroxylmetylenkhoxi hocationanion

D.xetonmetylaxitlng tnhnguyn tcation

Cu 3.7 C 3 cht hu c gm NH2CH2COOH, CH3CH2COOH v CH3[CH2]3NH2. nhn ra dung dch ca cc hp cht trn, ch cn dng thuc th no sau y?A. NaOH.

B. HCl.

C. CH3OH/HCl.

D. qu tm.

Cu 3.8 Este A c iu ch t amino axit B (ch cha C, H, O, N) v ancol metylic. T khi hi ca A so vi H2 l 44,5. t chy hon ton 8,9g este A thu c 13,2g CO2, 6,3g H2O v 1,12 lt N2 (ktc). Cng thc cu to thu gn ca A, B ln lt l

A. CH(NH2)2COOCH3; CH(NH2)2COOH.

B. CH2(NH2)COOH; CH2(NH2)COOCH3.

C. CH2(NH2)COOCH3; CH2(NH2)COOH.

D. CH(NH2)2COOH; CH(NH2)2COOCH3.

Cu 3.9 Thuc th no di y dng phn bit cc dung dch glucoz, glixerol, etanol v lng trng trng?A. NaOH.

B. AgNO3/NH3.

C. Cu(OH)2.

D. HNO3.

Cu 3.10 Khi thu phn 500g protein A thu c 170g alanin. Nu phn t khi ca A l 50.000, th s mt xch alanin trong phn t A l bao nhiu?A. 189.

B. 190.

C. 191.

D. 192.

Cu 3.11 Cht no sau y khng c phn ng vi dung dch C2H5NH2 trong H2O?

A. HCl.

B. H2SO4.

C. NaOH.

D. qu tm.

Cu 3.12 Glixin phn ng c vi tt c cc cht trong nhm cht no sau y (iu kin phn ng xem nh c ):

A. Qu tm , HCl , NH3 , C2H5OH.

B. NaOH, HCl, C2H5OH, H2N- CH2 - COOH

C. Phenoltalein , HCl , C2H5OH , Na.

D. Na , NaOH , Br2 , C2H5OH.Cu 3.13 Tm cng thc cu to ca hp cht hu c X cha 32% C; 6,667% H; 42,667% O; 18,666% N. Bit phn t X c mt nguyn t N v X c kh nng tham gia phn ng trng ngng.

A. H2NCH2COOH.

B. C2H5NO2.

C. HCOONH3CH3.

D. CH3COONH4.

Cu 3.14 Hp cht hu c A c cng thc phn t l C3H7O2N, A tc dng c vi dung dch NaOH, dung dch HCl v lm mt mu dung dch brom. Cng thc cu to ng ca A l

A. CH3CH(NH2)COOH.

B. CH2=CHCOONH4.

C. HCOOCH2CH2NH2.

D. H2NCH2CH2COOH.

Cu 3.15 Cho cc cht: etylen glicol (1), axit aminoaxetic (2), axit oxalic (3), axit acrylic (4). Nhng cht c th tham gia phn ng trng ngng l: A. (1), (2), (3).B. (1), (2).C. Ch c (2).D. C bn cht.

Cu 3.16 C cc dung dch cha trong cc l mt nhn sau: Lng trng trng, h tinh bt, glixerol. Thuc th c th dng phn bit cc dung dch trn l: A. Cu(OH)2.B. I2.C. AgNO3.D. c A, B u ng.

Cu 3.17 S ng phn ca hp cht hu c thm c cng thc phn t C7H7NO2 l: A. 7. B. 6. C. 5. D. 8.

Cu 3.18 S ng phn ca cc cht c cng thc phn t C4H10O (1), C4H9Cl (2), C4H10 (3), C4H11N (4) theo chiu tng dn l: A. (3), (2), (1), (4).

B. (4), (1), (2), (3).

C. (2), (4), (1), (3). D. (4), (3), (2), (1).

Cu 3.19 Cho s phn ng:C9H17O4N (X) C5H7O4NNa2 (Y) + 2C2H5OH.

Cng thc cu to thu gn ca X, Y ln lt l

A. C2H5OOCCH2CH(NH2)CH2COOC2H5, NaOOCCH2CH(NH2)CH2COONa.

B. CH3OOCCH2CH(NH2)CH2COOC3H7, NaOOCCH2CH(NH2)CH2COONa.

C. HOOCCH2CH(NH2)CH2COOC4H9, NaOOCCH2CH(NH2)CH2COONa.

D. CH3OOCCH2CH(NH2)CH2COOCH(CH3)2, NaOOCCH2CH(NH2)CH2COONa.

Cu 3.20 Chn pht biu ng v hp cht tp chc:A. Hp cht hu c c t hai loi nhm chc tr ln.

B. Hp cht hu c c t hai nhm chc tr ln.

C. Hp cht hu c c nhiu nhm chc.

D. Hp cht hu c c hai nhm chc.

Cu 3.21 Trong s sau, cng thc cu to thu gn ph hp ca A, B, C, D, E ln lt l

Etan A B C D E Glixin.A. C2H5Cl, C2H5OH , CH3CHO, CH3COOH , CH3COOCl.

B. C2H5Cl, C2H5OH , CH3CHO, CH3COOH, CH2ClCOOH.

C. C2H5Cl, C2H5OH , CH3 COCH3, CH3COOH, CH2ClCOOH.

D. C2H5Cl, C2H5OH , CH3COOH, CH3COCH3, CH2ClCOOH.

Cu 3.22 Cho 3 cht hu c: NH2CH2COOH (1); CH3CH2CH2CH2NH2 (2); CH3CH2COOH (3). Nhit nng chy ca chng c xp theo trnh t gim dn l

A. (2) < (3) < (1).B. (1) > (3) > (2).C. (3) < (2) < (1).D. (2) > (1) > (3). Cu 3.23 Hp cht a chc v hp cht tp chc ging nhau ch

A. u l hp cht c nhiu nhm chc.

B. u l hp cht cha cc nhm chc ging nhau.

C. phn t lun c lin kt (.

D. mch cacbon trong phn t c lin kt (.

Cu 3.24 X l mt axit (-monoamino monocacboxylic, c t khi hi so vi khng kh l 3,07. X l

A. glixin.

B. alanin.

C. axit ( - aminobutiric.

D. axit glutamic.

Cu 3.25 Khi un nng cht bo vi dung dch kim ....

A. lun thu c glixerol v phn ng xy ra thun nghch.

B. lun thu c glixerol, phn ng xy ra nhanh hn v mt chiu.

C. lun thu c mui ca axit bo v phn ng xy ra thun nghch.

D. lun thu c x phng, phn ng xy ra chm hn.

Cu 3.26 Amino axit l

A. hp cht hu c a chc, c cha 2 nhm chc COOH v NH2.

B. hp cht hu c a chc, c cha 2 loi nhm chc COOH v NH2.

C. hp cht hu c tp chc, c cha 2 nhm chc COOH v NH2.

D. hp cht hu c tp chc, c cha 2 loi nhm chc COOH v NH2.

Cu 3.27 Cng thc tng qut ca amino axit l

A. RCH(NH2)COOH.

B. R(NH2)x(COOH)y.C. R(NH2)(COOH). D. RCH(NH3Cl)COOH. Cu 3.28 Chn cu pht biu sai:

A. Amino axit l hp cht hu c tp chc.

B. Tnh baz ca C6H5NH2 yu hn NH3.

C. Cng thc tng qut ca amin no, mch h, n chc l CnH2n + 3N (n ( 1).

D. Dung dch ca cc amino axit u lm qu tm chuyn sang mu .

Cu 3.29 Hai phng trnh phn ng ho hc sau, chng minh c nhn nh rng:

H2NCH2COOH + NaOH ( H2NCH2COONa + H2O.

H2NCH2COOH + HCl ( HOOCCH2NH3Cl.

A. Glixin l mt axit. B. Glixin l mt baz. C. Glixin l mt cht lng tnh. D. Glixin l mt cht trung tnh.

Cu 3.30 Hp cht hu c X c cng thc cu to thu gn: HOOCCH2CH2CH(NH2)COOH. Tn gi ca X l

A. glixin. B. alanin. C. axit aipic. D. axit glutamic.

Cu 3.31 Cho s chuyn ho sau:

Cng thc cu to ph hp ca X, Y ln lt l

Cu 3.32 Phng trnh phn ng ho hc sau chng minh c rng:

A. H ni vi O ca ancol linh ng hn axit.

B. Glixin c nhm NH2.

C. H ni vi O ca axit linh ng hn ancol.

D. Glixin c nhm COOH.Cu 3.33 iu khng nh no sau y l sai ?

A. Phn t khi ca mt amin n chc lun l s chn.

B. Amino axit c tnh lng tnh.

C. Amino axit tham gia phn ng trng ngng.

D. Amin n chc u cha mt s l nguyn t H trong phn t.Cu 3.34 Mui ca axit glutamic dng lm bt ngt (cn gi l m chnh), c cng thc cu to thu gn l

A. HOOC CH2 CH2 CH(NH2) COOH.

B. NaOOC CH2 CH2 CH(NH2) COOH.

C. HOOC CH2 CH2 CH(NH2) COONH4.

D. NaOOC CH2 CH2 CH(NH2) COONa.

Cu 3.35 Cng thc cu to thu gn ca axit 2 amino 3 phenylpropanoic l

Cu 3.36 Chn cu pht biu sai:

A. Protein c trong mi b phn ca c th ng vt l hp cht hu c a chc.

B. Cc protein u cha cc nguyn t C , H , O , N.

C. nhit thng di tc dng ca men, protein b thu phn to ra cc amino axit.

D. Mt s protein b ng t khi un nng.Cu 3.37 iu ch glixin theo s : Axit axetic ( axit cloaxetic ( glixin. Cn dng thm cc cht phn ng no sau y (khng k xc tc):

A. Hiroclorua v amoniac.B. Clo v amin.

C. Axit clohiric v mui amoni. D. Clo v amoniac.

Cu 3.38 Tnh baz ca amin no trong s cc amin sau y l yu nht ?

A. anilin.

B. iphenylamin.C. triphenylamin.

D. khng xc nh c.

Cu 3.39 Sn phm ca phn ng este ho gia amino axit X v metanol thu c este c t khi hi so vi propin bng 2,225. Tn gi ca X l

A. alanin.

B. glixin.

C. axit glutamic.

D. tt c A, B, C u sai.

Cu 3.40 Cho dung dch metylamin n d vo cc dung dch sau: FeCl3, CuSO4, Zn(NO3)2, CH3COOK th s lng kt ta thu c l: A. 0.

B. 1.

C. 2.

D. 3.

Cu 3.41 Cho 15g hn hp cc amin gm anilin, metylamin, imetylamin, ietylmetylamin tc dng va vi 50ml dung dch HCl 1M. Khi lng sn phm thu c c gi tr l

A. 16,825g.

B. 20,18g.

C. 21,123g.

D. khng d kin tnh.

Cu 3.42 Cho dung dch metylamin n d vo cc dung dch sau: (CH3COO)2Cu, (CH3COO)2Pb, (CH3COO)2Mg, CH3COOAg, th s lng kt ta thu c l: A. 0.

B. 1.

C. 2.

D. 3.

Cu 3.43 Khi nu canh cua, riu cua ni ln c gii thch l do:

A. Cc cht bn trong cua cha c lm sch ht.

B. C phn ng ho hc ca NaCl vi cht c trong nc lc khi xay (gi) cua.

C. S ng t ca protit.

D. Tt c cc nguyn nhn nu A, B, C.

Cu 3.44 iu ch anilin bng cch kh nitrobenzen th dng cht kh no sau y ?

A. NH3.

B. kh H2.

C. cacbon.

D. Fe + dung dch HCl.Cu 3.45 Hn hp (X) gm hai amin n chc. Cho 1,52g X tc dng va vi 200ml dung dch HCl thu c 2,98g mui. Tng s mol hai amin v nng mol/l ca dung dch HCl l

A. 0,04 mol v 0,2M.

B. 0,02 mol v 0,1M.

C. 0,06 mol v 0,3M. D. kt qu khc.

Cu 3.46 Cho 3,04g hn hp Y gm hai amin n chc, no, mch h tc dng va vi dung dch HCl thu c 5,96g mui. Bit trong hn hp, s mol hai amin bng nhau. Cng thc phn t ca hai amin l

A. CH5N v C2H7N.

B. C3H9N v C2H7N.

C. C3H9N v C4H11N. D. kt qu khc.Cu 3.47 Hp cht hu c (X) c cng thc phn t CxHyNO c khi lng phn t bng 113u. X c c im cu to v cc tnh cht sau: phn t c mch cacbon khng phn nhnh, khng lm mt mu dung dch Br2, khi tc dng vi dung dch NaOH ch thu c sn phm hu c duy nht. Ngoi ra, X cn c kh nng tham gia phn ng trng hp. Cng thc cu to ca X l

C. H2N[CH2]4 CHO.

D. kt qu khc.Cu 3.48 Hy ch ra cu sai trong cc cu sau:

A. Cc amin u kt hp vi proton.

B. Tnh baz ca cc amin u mnh hn NH3.

C. Metylamin c tnh baz mnh hn anilin.

D. Cng thc tng qut ca amin no, mch h l CnH2n+2+kNk.

Cu 3.49 t chy hon ton hn hp hai amin no, n chc, l ng ng lin tip, thu c 2,24 lt kh CO2 (ktc) v 3,6g H2O. Cng thc phn t ca 2 amin l

A. CH5N v C2H7N.B. C2H7N v C3H9N.C. C3H9N v C4H11N.D. kt qu khc.

Cu 3.50 C hai amin bc mt gm A (ng ng ca anilin) v B (ng ng ca metylamin). t chy hon ton 3,21g amin A sinh ra kh CO2, hi H2O v 336 cm3 kh N2 (ktc). Khi t chy amin B thy . Bit rng tn ca A c tip u ng para. Cng thc cu to ca A, B ln lt l

Cu 3.51 t chy hon ton m g mt amin A bng lng khng kh va , thu c 17,6g kh cacbonic, 12,6g hi nc v 69,44 lt kh nit. Gi thit khng kh ch gm nit v oxi, trong nit chim 80% th tch (cc V o ktc). Gi tr m v tn gi ca amin l

A. 9, etylamin.

B. 7, imetylamin.C. 8, etylamin.

D. 9, etylamin hoc imetylamin.

Cu 3.52 Khi t chy hon ton mt amin n cht X, ngi ta thu c 10,125g H2O, 8,4 lt kh CO2 v 1,4 lt N2 (cc V o ktc). X c cng thc phn t l A. C4H11N.

B. C2H7N.C. C3H9N.D. C5H13N.

Cu 3.53 Cho 20g hn hp gm 3 amin no, n chc l ng ng lin tip ca nhau, tc dng va vi dung dch HCl, c cn dung dch thu c 31,68g hn hp mui. Nu 3 amin trn c trn theo t l s mol 1:10:5 v th t phn t khi tng dn th cng thc phn t ca 3 amin l

A. C2H7N, C3H9N, C4H11N. B. C3H9N, C4H11N, C5H13N. C. C3H7N, C4H9N, C5H11N. D. CH3N, C2H7N, C3H9N.Cu 3.54 Dung dch X cha HCl v H2SO4 c pH = 2. trung ho hon ton 0,59g hn hp 2 amin no, n chc, bc I (c s nguyn t C nh hn hoc bng 4) phi dng mt lt dung dch X. Cng thc phn t ca hai amin ln lt l: A. CH3NH2 v C4H9NH2.B. C3H7NH2 v C4H9NH2. C. C2H5NH2 v C4H9NH2.D. A v C ng.

Cu 3.55 Khi t chy mi ng ng ca ankylamin, th t l th tch X = bin i nh th no theo s lng nguyn t cacbon tng dn trong phn t ?

A. 0,4 ( X < 1,2.B. 0,8 ( X < 2,5.

C. 0,4 ( X < 1.D. 0,75 < X ( 1.

Cu 3.56 t chy hon ton mt amin thm X thu c 3,08g CO2, 0,99g H2O v 336ml N2 (ktc). trung ho 0,1 mol X cn 600ml dung dch HCl 0,5M. Bit X l amin bc I, cng thc cu to thu gn c th c ca X l

A. CH3C6H2(NH2)3. B. CH3NHC6H3(NH2)2.C. H2NCH2C6H3(NH2)2.

D. c A, C u ng.

Cu 3.57 Cc cht A, B, C c cng cng thc phn t C4H9O2N. Bit A tc dng vi c HCl v Na2O; B tc dng vi H mi sinh to ra B; B tc dng vi HCl to ra B; B tc dng vi NaOH to ra B; C tc dng vi NaOH to ra mui v NH3. Cng thc cu to thu gn ca A, B, C ln lt l

A. C4H9NO2, H2NC3H6COOH, C3H5COONH4.

B. H2NC3H6COOH, C3H5COONH4, C4H9NO2.

C. C3H5COONH4, H2NC3H6COOH, C4H9NO2.

D. H2NC3H6COOH, C4H9NO2, C3H5COONH4.

Cu 3.58 Mt hp cht hu c A mch thng c cng thc phn t l C3H10O2N2. A tc dng vi kim to thnh NH3. Mt khc, A tc dng vi dung dch axit to thnh mui amin bc I. Cng thc cu to ca A l

A. H2NCH2CH2COONH4.B. CH3CH(NH2)COONH4.C. A v B u ng. D. A v B u sai.

Cu 3.59 Nhng t hay cm t thch hp vi nhng ch trng cc cu trong on vn sau l

Amin l nhng hp cht hu c c to thnh (1)mt hay nhiu (2)trong phn t amoniac bi (3). Amino axit l loi hp cht hu c ...(4)m phn t cha (5). V c nhm (6) v nhm (7) trong phn t, amino axit biu hin tnh cht (8)v tnh cht c bit l phn ng (9)

(1)(2)(3)(4)(5)(6)(7)(8)(9)

A.khi thay thnguyn t hiromt hay nhiu gc hirocacbonlung tnhng thi nhm cacboxyl v nhm aminotp chc

cacboxylaminotrng ngng

B.khi thay thcacboxyl

mt hay nhiu gc hirocacbontp chcng thi nhm cacboxyl v nhm aminoaminonguyn t hirolung tnhtrng ngng

C.khi thay thnguyn t hiromt hay nhiu gc hirocacbontp chcng thi nhm cacboxyl v nhm aminoaminocacboxyllung tnhtrng ngng

D.nguyn t hirokhi thay th

mt hay nhiu gc hirocacbontp chcng thi nhm cacboxyl v nhm aminoaminocacboxyllung tnhtrng ngng

Cu 3.60 Amino axit X cha mt nhm chc amin bc I trong phn t. t chy hon ton mt lng X thu c CO2 v N2 theo t l th tch 4:1. X l hp cht no sau y?

A. H2NCH2COOH.B. H2NCH2CH2COOH.

C. H2NCH(NH2)COOH.D. tt c u sai.

Cu 3.61 Khi t chy hon ton ng ng X ca axit aminoaxetic, thu c . Cng thc cu to thu gn c th c ca X l

A. CH3CH(NH2)COOH, H2NCH2CH2COOH, CH3NHCH2COOH.

B. H2N[CH2]3COOH, CH3CH(NH2)CH2COOH, CH3NH[CH2]2COOH.

C. H2N[CH2]4COOH, H2NCH(NH2)[CH2]2COOH, CH3NH[CH2]3COOH.

D. kt qu khc.

Cu 3.62 Hp cht X cha cc nguyn t C, H, O, N v c phn t khi l 89. Khi t chy 1 mol X thu c hi nc, 3 mol CO2 v 0,5 mol N2. Bit rng, X va tc dng c vi dung dch HCl va tc dng c vi dung dch NaOH, ngoi ra cn tc dng c vi nc brom. X l hp cht no sau y?

A. H2N-CH=CH-COOH.B. CH2=C(NH2)-COOH. C. CH2=CH-COONH4. D. c A, B, C u sai.

Cu 3.63 Hp cht hu c X c phn t khi nh hn phn t khi ca benzen, ch cha nguyn t C, H, O, N trong hiro chim 9,09%, nit chim 18,18%. t chy 7,7g cht X, thu c 4,928 lt kh CO2 (o 27,3oC, 1atm). Bit X tc dng vi dung dch NaOH v dung dch HCl. Cng thc cu to thu gn ca X l

A. H2NCH2COOH.

B. CH3COONH4 hoc HCOONH3CH3.

C. C2H5COONH4 hoc HCOONH3CH3.

D. c A, B, C u sai.

Cu 3.64 Cho a g hn hp hai amino axit A, B u no, mch h, khng phn nhnh , cha 1 chc axit, 1 chc amino tc dng vi 40,15g dung dch HCl 20% c dung dch A. tc dng ht vi cc cht trong dung dch A, cn 140ml dung dch KOH 3M. Mt khc, t chy a g hn hp hai amino axit trn v cho sn phm chy qua dung dch NaOH d, th thy khi lng bnh ny tng thm 32,8g. Bit rng, khi t chy thu c kh nit dng n cht. Cho t l phn t khi ca chng l 1,37. Cng thc cu to thu gn ca hai amino axit ln lt l

A. H2N[CH2]3COOH, H2NCH2COOH.

B. H2NCH2COOH, H2N[CH2]3COOH.

C. H2N[CH2]4COOH, H2NCH2COOH.

D. c A, B u ng.

Cu 3.65 A l mt amino axit trong phn t ngoi cc nhm cacboxyl v amino khng c nhm chc no khc. Bit 0,1 mol A phn ng va ht vi 100ml dung dch HCl 1M to ra 18,35g mui. Mt khc, 22,05g A khi tc dng vi mt lng NaOH d, to ra 28,65g mui khan. Bit A c cu to mch khng phn nhnh v nhm amino v tr (. Cng thc cu to thu gn ca A l

A. HOOCCH(NH2)COOH.

B. HOOCCH2CH(NH2)COOH.

C. HOOCCH2CH2CH(NH2)COOH.

D. CH3CH2CH(NH2)COOH.

Cu 3.66 X l mt (-amino axit no ch cha mt nhm NH2 v mt nhm COOH. Cho 15,1g X tc dng vi dung dch HCl d, thu c 18,75g mui ca X. Cng thc cu to ca X l

A. CH3CH(NH2)COOH.

B. H2NCH2CH2COOH.

C. CH3CH2CH(NH2)COOH.

D. kt qu khc.

Cu 3.67 Chn pht biu sai:

A. Thu phn protein bng axit khi un nng s cho mt hn hp cc amino axit.

B. Phn t khi ca mt amino axit (gm 1 chc amino v 1 chc cacboxyl) lun lun l s l.

C. Cc amino axit u tan trong nc.

D. Dung dch amino axit khng lm giy qu i mu.

Cu 3.68 Hy in nhng t hoc cm t thch hp vo cc ch trng cc cu sau

- Protein c trong

- Cc protein u cha cc nguyn t

- nhit thng di tc dng ca men, protein to ra cc amino axit.

- Mt s protein b khi un nng hoc khi cho thm mt s ho cht.

(1) mi b phn ca c th; (2) b thu phn; (3) cacbon, hiro, oxi, nit; (4) ng t

Nhng t hoc cm t thch hp theo trnh t t trn xung l

A. (1), (2), (3), (4).B. (1), (3), (2), (4).C. (1), (4), (3), (2).D. (4), (2), (3), (1).

Cu 3.69 Cu khng nh no sau y lun ng:

A. Phn t khi ca mt amin n chc lun l s chn.

B. Amin lun lun phn ng vi H+.

C. Mi amin n chc u cha mt s l s nguyn t H trong phn t.

D. B v C u ng.

Cu 3.70 Cho cc cht: (1) amoniac; (2) anilin; (3) p-nitroanilin; (4) p-nitrotoluen; (5) metylamin; (6) imetylamin. Trnh t tnh baz tng dn theo chiu t tri sang phi l

A. (1) < (4) < (3) < (2) < (5) < (6).

B. (2) < (1) < (3) < (4) < (5) < (6).

C. (4) < (3) < (2) < (1) < (5) < (6).

D. (1) < (2) < (4) < (3) < (5) < (6).

Cu 3.71 t chy hon ton 0,02 mol mt amin bc I (X) vi lng oxi va , thu ton b sn phm qua bnh cha nc vi trong d, thy khi lng bnh ng nc vi trong tng 3,2g v cn li 0,448 lt (ktc) mt kh khng b hp th, khi lc dung dch thu c 4,0g kt ta. X c cng thc cu to no sau y?

A. CH3CH2NH2.B. H2NCH2CH2NH2.

C. CH3CH(NH2)2.

D. B, C u ng.

Cu 3.72 Amino axit (Y) c cng thc dng NCxHy(COOH)m. Ly mt lng axit aminoaxetic (X) v 3,82g (Y). Hai cht (X) v (Y) c cng s mol. t chy hon ton lng (X) v (Y) trn, th tch kh oxi cn dng t chy ht (Y) nhiu hn t chy ht (X) l 1,344 lt (ktc). Cng thc cu to thu gn ca (Y) l

A. CH3NHCH2COOH.

B. H2NCH2CH2COOH.

C. N(CH2COOH)3.D. NC4H8(COOH)2.

Cu 3.73 Hp cht X cha cc nguyn t C, H, O, N vi t l khi lng tng ng l 3:1:4:7. Bit phn t X c 2 nguyn t nit. Cng thc phn t ca X l: A. CH4ON2. B. C3H8ON2. C. C3H8O2N2.D. kt qu khc.

CHNG IV. POLIMECu 4.1 Hp cht u v cc hp cht trung gian trong qu trnh iu ch ra cao su buna (1) l: etilen (2), metan (3), ru etylic (4), ivinyl (5), axetilen (6). Hy sp xp cc cht theo ng th t xy ra trong qu trnh iu ch

A. 3 ( 6 ( 2 ( 4 ( 5 ( 1.

B. 6 ( 4 ( 2 ( 5 ( 3 ( 1.

C. 2 ( 6 ( 3 ( 4 ( 5 ( 1.

D. 4 ( 6 ( 3 ( 2 ( 5 ( 1.

Cu 4.2 T nilon 6,6 c cng thc l

Cu 4.3 Khng nn i (l) qu nng qun o bng nilon; len; t tm, v:

A. Len, t tm, t nilon km bn vi nhit.

B. Len, t tm, t nilon c cc nhm (- CO - NH -) trong phn t km bn vi nhit.

C. Len, t tm, t nilon mm mi.

D. Len, t tm, t nilon d chy.

Cu 4.4 Nhng phn t no sau y c th tham gia phn ng trng hp ?CH2=CH2(1); CHCH(2); CH2=CHCl(3); CH3CH3(4)A. (1), (3).

B. (3), (2).

C. (1), (2), (3), (4).

D. (1), (2), (3).

Cu 4.5 Khi H2SO4 m c ri vo qun o bng vi si bng, ch vi b en li do c sn phm to thnh lA. cacbon. B. S. C. PbS. D. H2S.

Cu 4.6 Cho s sau: CH4 ( X ( Y ( Z ( cao su buna. Tn gi ca X , Y , Z trong s trn ln lt l A. Axetilen, etanol, butaien.

B. Anehit axetic, etanol, butaien.

C. Axetilen, vinylaxetilen, butaien.

D. Etilen, vinylaxetilen, butaien.

Cu 4.7 Cao su buna S c cng thc l

Cu 4.8 Cao su buna - S c iu ch bng :

A. Phn ng trng hp.

B. Phn ng ng trng hp.

C. Phn ng trng ngng.

D. Phn ng ng trng ngng.

Cu 4.9 Thu tinh plexiglas l polime no sau y?

A. Polimetyl metacrylat (PMM).

B. Polivinyl axetat (PVA).

C. Polimetyl acrylat (PMA).

D. Tt c u sai.

Cu 4.10 Tn ca polime c cng thc sau l

A. nha phenol-fomanehit.

B. nha bakelt.C. nha do.

D. polistiren.

Cu 4.11 T enang thuc loi A. t axetat.

B. t poliamit. C. t polieste.

D. t tm.

Cu 4.12 Phn ng no sau y to ra sn phm l cao su buna S?

Cu 4.13 Phn ng no sau y to ra sn phm l cao su isopren?

Cu 4.14 Phn ng no sau y to ra sn phm l cao su cloropren?

Cu 4.15 Hiro ho hp cht hu c X c isopentan. X tham gia phn ng trng hp c mt loi cao su. Cng thc cu to thu gn ca X l

Cu 4.16 iu ch nilon - 6,6 ngi ta dng axit no trng ngng vi hexametylen iamin ?

A. axit axetic.

B. axit oxalic.

C. axit stearic.

D. axit aipic.

Cu 4.17 Phn ng no sau y to ra sn phm l cao su buna N?

Cu 4.18 Tn ca monome to ra polime c cng thc l

A. axit acrylic.

B. metyl acrylat. C. axit metacrylic.D. metyl metacrylat.

Cu 4.19 Sn phm ca phn ng trng hp metyl metacrylat c gi l

A. nha bakelt.B. nha PVC.

C. cht do.

D. thu tinh hu c.

Cu 4.20 T capron c iu ch t monome no sau y ?

A. axit metacrylic.B. caprolactam.C. phenol.

D. axit caproic.

Cu 4.21 T enang c iu ch bng cch

A. trng hp axit acrylic.

B. trng ngng alanin.

C. trng ngng H2N-(CH2)6-COOH.

D. trng ngng HOOC-(CH2)4-COOH.

Cu 4.22 Nha PS c iu ch t monome no sau y?

A. axit metacrylic.

B. caprolactam.

C. phenol.

D. stiren.

Cu 4.23 Cht c kh nng trng hp thnh cao su l

Cu 4.24 T monome no sau y c th iu ch c poli(vinyl ancol) ?

Cu 4.25 T poliamit l nhng polime tng hp c cha nhiu nhm

A. CONH trong phn t.

B. CO trong phn t.

C. NH trong phn t.

D. CH(CN) trong phn t.

Cu 4.26 Mt polime Y c cu to mch nh sau: (CH2(CH2(CH2(CH2(CH2(CH2(CH2(CH2(

Cng thc mt mt xch ca polime Y l

A. (CH2(CH2(CH2(.B. (CH2(CH2(CH2(CH2(.

C. (CH2(.

D. (CH2(CH2(.

Cu 4.27 Tin hnh clo ho poli(vinyl clorua) thu c mt loi polime X dng iu ch t clorin. Trong X c cha 66,18% clo theo khi lng. Vy, trung bnh c bao nhiu mt xch PVC phn ng c vi mt phn t clo ?A. 1.

B. 2.

C. 3.

D. 4.

Cu 4.28 T capron (nilon 6) c cng thc l

Cu 4.29 Tin hnh phn ng ng trng hp gia stiren v buta 1,3 ien (butaien), thu c polime X. C 2,834 gam X phn ng va ht vi 1,731 gam Br2. T l s mt xch (butaien : stiren) trong loi polime trn l A. 1 : 1.

B. 1 : 2.

C. 2 : 3.

D. 1 : 3.

Cu 4.30 Chn cu pht biu sai:A. Cc vt liu polime thng l cht rn khng bay hi.

B. Hu ht cc polime khng tan trong nc v cc dung mi thng thng.

C. Polime l nhng cht c phn t khi rt ln do nhiu mt xch lin kt vi nhau.

D. Polietilen v poli(vinyl clorua) l loi polime thin nhin, cn tinh bt v xenluloz l loi polime tng hp.

Cu 4.31 Cho s phn ng sau: X Y polime.

X c cng thc phn t C8H10O khng tc dng vi NaOH. Cng thc cu to thu gn ca X, Y ln lt l:

A. C6H5CH(CH3)OH, C6H5COCH3.

B. C6H5CH2CH2OH, C6H5CH2CHO.

C. C6H5CH2CH2OH, C6H5CH=CH2.

D. CH3-C6H4CH2OH , C6H5CH=CH2.

Cu 4.32 H s trng hp (s mt xch) ca t nilon 6,6 c phn t khi (M = 2500) l

A. 10. B. 11. C. 12. D. 13.

Cu 4.33 iu ch nha phenol-fomanehit (1), cc cht u v cht trung gian trong qu trnh iu ch l: metan (2), benzen (3), anehit fomic (4), phenol (5), benzyl clorua (6), natri phenolat (7), axetilen (8), etilen (9), phenyl clorua (10). Chn cc cht thch hp cho s l

A. (1), (2), (8), (9), (3), (5), (6).

B. (1), (2), (8), (4), (3), (10), (7), (5).

C. (1), (2), (3), (4), (5), (6), (7).

D. (1), (3), (5), (7), (9), (6), (2), (4).

Cu 4.34 un nng poli (vinyl axetat) vi kim iu kin thch hp ta thu c sn phm trong c: A. ancol vinylic.B. ancol etylic. C. poli(vinyl ancol).

D. axeton.Cu 4.35 Cho cc polime : PE, PVC, cao su buna, amiloz, amilopectin, xenluloz, cao su lu ho. Polime c dng cu trc mch khng phn nhnh l A. PE, PVC, cao su lu ho, amiloz, xenluloz.B. PE, PVC, cao su buna, amilopectin, xenluloz.C. PE, PVC, cao su buna , amiloz , amilopectin.D. PE, PVC,cao su buna, amiloz, xenluloz.

Cu 4.36 Cht do PVC c iu ch theo s sau: CH4 A B PVC. Bit CH4 chim 95% th tch kh thin nhin, vy iu ch mt tn PVC th s m3 kh thin nhin (ktc) cn l: A. 5883 m3.

B. 4576 m3.

C. 6235 m3.

D. 7225 m3.

Cu 4.37 ng trng hp imetyl buta1,3ien vi acrilonitrin(CH2=CHCN) theo t l tng ng x : y, thu c mt loi polime. t chy hon ton mt lng polime ny, thu c hn hp kh v hi (CO2, H2O, N2) trong c 57,69% CO2 v th tch. T l x : y khi tham gia trng hp l bao nhiu ?

A. .

B. .

C. .

D. .

Cu 4.38 Cho cc cht sau: butan (1), etin (2), metan (3), etilen (4), vinyl clorua (5), nha PVC (6). Hy cho bit s chuyn ho no sau y c th dng iu ch poli(vinyl clorua) ?

A. (1) ( (4) ( (5) ( (6).

B. (1) ( (3) ( (2) ( (5) ( (6).

C. (1) ( (2) ( (4) ( (5) ( (6).

D. c A v B.

Cu 4.39 Khi cho hai cht X v Y trng ngng to ra polime Z c cng thc

.

Cng thc ca X, Y ln lt l

A. HO-CH2-CH2-OH; HOOC-C6H4-COOH.

B. HO-CH2-COOH; HO-C6H4-COOH.

C. HOOC-CH2CH2-COOH; HO-C6H4-OH.

D. c A, B, C u ng.

Cu 4.40 C th phn bit cc dng lm bng da tht v da nhn to (PVC) bng cch no sau y?

A. So snh kh nng thm nc ca chng, da tht d thm nc hn.

B. So snh mm mi ca chng, da tht mm mi hn da nhn to.

C. t hai mu da, mu da tht cho mi kht, cn da nhn to khng cho mi kht.

D. Dng dao ct ngang hai mu da, da tht vt ct b x, cn da nhn to th nhn bng.

Cu 4.41 un nng vinyl axetat vi kim iu kin thch hp, ta thu c sn phm trong c:

A. ancol vinylic.B. ancol etylic. C. anehit axetic.D. axeton.Cu 4.42 Xt cc phn ng sau y, phn ng no thuc loi phn ng trng ngng ?

A. ch phn ng (1). B. ch phn ng (3). C. hai phn ng (1) v (2).D. hai phn ng (2) v (3).Cu 4.43 phn bit la sn xut t t nhn to (t visco, t xenluloz axetat) v t thin nhin (t tm, len) ngi ta dng cch no sau y?

A. So snh bng ca la, la sn xut t t thin nhin c bng cao hn la sn xut t t nhn to.

B. So snh mm mi ca chng, t thin nhin (t tm, len), mm mi hn t nhn to.

C. t hai mu la, mu la sn xut t t thin nhin cho mi kht, cn mu la sn xut t t nhn to khng cho mi kht.

D. Dng kim may (my may) may th vi ng ch trn la, la sn xut t t thin nhin d may hn la sn xut t t nhn to.

Cu 4.44 Polime X (cha C, H, Cl) c h s trng hp l 560 v phn t khi l 35.000. Cng thc mt mt xch ca X lA. CH2 CHCl .B. CH = CCl .C. CCl = CCl .D. CHCl CHCl .

Cu 4.45 T lapsan thuc loi: A. t axetat.

B. t visco. C. t polieste.D. t poliamit.

Cu 4.46 Polime l sn phm ca phn ng trng hp sau thu phn trong mi trng kim ca monome no sau y ?

A. CH2 = CH COOCH3.

B. CH3COOCH = CH2.

C. C2H5COOCH2CH = CH2.

D. CH2 = CHCOOCH2CH = CH2.

Cu 4.47 Mun tng hp 120kg poli(metyl metacrylat) th khi lng ca axit v ancol tng ng cn dng l bao nhiu ? Bit hiu sut qu trnh este ho v trng hp ln lt l 60% v 80%.

A. 215kg v 80kg.B. 171kg v 82kg.C. 65kg v 40kg.D. 175kg v 70kg.

Cu 4.48 Cho cc polime sau y: (1) t tm; (2) si bng; (3) si ay; (4) t enang; (5) t visco; (6) nilon 6,6; (7) t axetat. Loi t c ngun gc xenluloz l

A. (1), (2), (6).

B. (2), (3), (5), (7).C. (2), (3), (6).

D. (5), (6), (7).

Cu 4.49 Khi t chy mt loi polime ch thu c kh CO2 v hi H2O vi t l . Vy, polime trn thuc loi no trong s cc polime sau ?

A. poli(vinyl clorua).

B. polietilen.

C. tinh bt.

D. protein.CHNG V. I CNG V KIM LOICu 5.1 V tr ca nguyn t M (Z = 26) trong bng h thng tun hon l

A. 26, chu k 4, nhm VIIIB. B. 26, chu k 4, nhm VIIIA.

C. 26, chu k 4, nhm IIB. D. 26, chu k 4, nhm IIA.

Cu 5.2 Ion M2+ c cu hnh electron lp ngoi cng l 3s23p6. V tr M trong bng h thng tun hon l

A. 20, chu k 4, nhm IIA. B. 20, chu k 4, nhm IIB.

C. 18, chu k 3, nhm VIIIA. D. 18, chu k 3, nhm VIIIB.

Cu 5.3 Trong mng tinh th kim loi c

A. cc nguyn t kim loi.

B. cc electron t do.

C. cc ion dng kim loi v cc electron t do.

D. ion m phi kim v ion dng kim loi.

Cu 5.4 Cho cu hnh electron: 1s22s22p63s23p6. Dy gm cc nguyn t v ion c cu hnh electron trn l: A. Ca2+, Cl, Ar.

B. Ca2+, F, Ar. C. K+, Cl, Ar. D. K+, Cl-, Ar.

Cu 5.5 Cation M+ c cu hnh electron phn lp ngoi cng l 2p6. Nguyn t M l

A. K.

B. Cl.

C. F.

D. Na.

Cu 5.6 Ho tan 1,44g mt kim loi ho tr II trong 150ml dung dch H2SO40,5M. Mun trung ho axit d trong dung dch thu c phi dng ht 30ml dung dch NaOH 1M. Kim loi l

A. Mg.

B. Ba.

C. Ca.

D. Be.

Cu 5.7 Ho tan hon ton 15,4g hn hp Mg v Zn trong dung dch HCl d thy c 0,6g kh H2 bay ra. S g mui to ra l: A. 35,7.

B. 36,7. C. 63,7.

D. 53,7.

Cu 5.8 Lin kt kim loi l

A. lin kt sinh ra bi lc ht tnh in gia cc ion dng v cc electron t do.

B. lin kt sinh ra bi lc ht tnh in gia ion dng v cc ion m.

C. lin kt gia cc nguyn t bng cc cp electron dng chung.

D. lin kt sinh ra bi lc ht tnh in gia nguyn t H tch in dng v nguyn t O tch in m.

Cu 5.9 Trong hp kim Al- Ni, c 10 mol Al th c 1 mol Ni. Phn trm khi lng ca Al trong hp kim l: A. 81%. B. 82%.

C. 83%. D. 84%.

Cu 5.10 Ngm 2,33g hp kim Fe- Zn trong dung dch HCl n phn ng hon ton thu c 0,896 lt H2 (ktc). Thnh phn % ca Fe l: A. 75,1%. B. 74,1%. C. 73,1%. D. 72,1%.

Cu 5.11 Ho tan 0,5g hp kim ca Ag vo dung dch HNO3. Thm dung dch HCl vo dung dch trn, thu c 0,398g kt ta. Thnh phn %Ag trong hp kim l A. 60%. B. 61%. C. 62%. D. 63%.

Cu 5.12 Tnh cht vt l chung ca kim loi l

A. Tnh do, dn in, dn nhit, nh kim.

B. Tnh mm, dn in, dn nhit, nh kim.

C. Tnh cng, dn in, dn nhit, nh kim. D. Nhit nng chy cao, dn in, dn nhit, nh kim.

Cu 5.13 Hp kim c

A. tnh cng hn kim loi nguyn cht.B. tnh dn in, dn nhit cao hn kim loi nguyn cht.

C. tnh do hn kim loi nguyn cht.

D. nhit nng chy cao hn kim loi nguyn cht.

Cu 5.14 Mt hp kim Cu-Al cha 12,3% Al. Cng thc ho hc ca hp kim l

A. Cu3Al. B. Cu3Al2. C. CuAl.

D. CuAl3.

Cu 5.15 Mt phng php ho hc lm sch mt loi thu ngn c ln Zn, Sn, Pb l ngm hn hp trong dung dch X d. X c th l: A. Zn(NO3)2.

B. Sn(NO3)2.

C. Pb(NO3)2.

D. Hg(NO3)2.

Cu 5.16 Ngm mt l km nh trong mt dung dch c cha 2,24g ion M2+. Phn ng xong, khi lng l km tng thm 0,94g. M l: A. Fe.

B. Cu.

C. Cd.

D. Ag. Cu 5.17 bo v v tu i bin phn ngm di nc ngi ta ni n vi

A. Zn. B. Cu. C. Ni. D. Sn.

Cu 5.18 Cho l st vo dung dch HCl long c mt lng nh CuSO4 thy H2 thot ra cng lc cng nhanh do

A. L st b n mn kiu ho hc.

B. L st b n mn kiu in ho.

C.Fe kh Cu2+ thnh Cu.

D.Fe tan trong dung dch HCl to kh H2.

Cu 5.19 Ngm mt l Ni ln lt trong nhng dung dch mui sau : MgSO4, NaCl, CuSO4, AlCl3, ZnCl2, Pb(NO3)2, AgNO3. Ni kh c cc ion kim loi

A. Mg2+, Ag+, Cu2+.B. Na+, Ag+, Cu2+.C. Pb2+, Ag+, Cu2+.D. Al3+, Ag+, Cu2+.

Cu 5.20 Cho bt Cu n d vo dung dch hn hp gm Fe(NO3)3 v AgNO3 thu c cht rn X v dung dch Y. X, Y ln lt l

A. X ( Ag, Cu); Y ( Cu2+, Fe2+). B. X ( Ag); Y ( Cu2+, Fe2+).C. X ( Ag); Y (Cu2+). D. X (Fe); Y (Cu2+).

Cu 5.21 Chn mt dy cht tnh oxi ho tng

A. Al3+, Fe2+, Cu2+, Fe3+, Ag+.

B. Ag+, Fe3+, Cu2+, Fe2+, Al3+.

C. Fe3+, Cu2+, Fe2+, Ag+, Al3+.

D. Al3+, Cu2+, Fe2+, Fe3+, Ag+.

Cu 5.22 Ngm mt l Zn trong 200ml dung dch AgNO3 0,1M. Khi phn ng kt thc khi lng l Zn:

A. gim 1,51g. B. tng 1,51g.

C. gim 0,43g. D. tng 0,43g.Cu 5.23 Cho cc ion : Fe2+, Cu2+, Fe3+, Ag+ v cc kim loi : Fe, Cu, Ag. Chn mt dy in ho gm cc cp oxi ho- kh xp theo chiu tnh oxi ho ca ion kim loi tng, tnh kh ca kim loi gim: A. Fe2+/ Fe, Cu2+/Cu, Fe3+/ Fe2+, Ag+/Ag.

B. Fe2+/ Fe, Cu2+/Cu, Ag+/Ag, Fe3+/ Fe2+.

C.Ag+/Ag, Fe3+/ Fe2+, Cu2+/ Cu, Fe2+/ Fe.

D. Ag+/ Ag, Fe2+/ Fe, Fe3+/Fe2+, Cu2+/Cu.

Cu 5.24 C mt hn hp gm: Fe, Ag, Cu. Tch Ag ra khi hn hp vi khi lng khng i ngi ta dng dung dch: A. AgNO3.

B. Cu(NO3)2.

C. FeCl3..

D. FeCl2.

Cu 5.25 Trong mt dung dch A c cha ng thi cc cation sau : K+, Ag+, Fe2+, Ba2+. Trong dung dch A ch cha mt loi anion l: A. SO42-. B. NO3-. C. Cl-. D. CO32-.

Cu 5.26 Cho cc cp oxi ho- kh : Al3+/Al, Fe2+/ Fe, Cu2+/ Cu, Fe3+/ Fe2+, Ag+/Ag. Kim loi kh c ion Fe3+ thnh Fe l: A. Fe. B. Cu. C. Cu. D. Al.

Cu 5.27 Cho cc cp oxi ho- kh : Al3+/Al, Fe2+/ Fe, Cu2+/ Cu, Fe3+/ Fe2+, Ag+/Ag. Kim loi Cu kh c cc ion trong cc cp oxi ho trn lA. Fe3+, Ag+. B. Fe3+, Fe2+. C. Fe2+, Ag+. D. Al3+, Fe2+.

Cu 5.28 Khi nung Fe(OH)2 trong khng kh m n khi lng khng i, ta thu c cht rn l

A. FeO. B. Fe2O3. C. Fe3O4. D. Fe(OH)3.

Cu 5.29 Th Na vo dung dch CuSO4 quan st thy hin tng

A. c kh thot ra, xut hin kt ta xanh, sau kt ta tan.

B. c kh thot ra, xut hin kt ta xanh, sau kt ta khng tan.

C. dung dch mt mu xanh, xut hin Cu mu .

D. dung dch c mu xanh, xut hin Cu mu .

Cu 5.30 C 2 ng nghim ng dung dch CuSO4. Cho vo ng nghim (1) mt ming nh Na, ng nghim (2) mt inh Fe lm sch. Ion Cu2+ b kh thnh Cu trong th nghim

A. (1).

B. (2). C. (1) v (2). D. khng b kh.

Cu 5.31 Cho 1,12g bt Fe v 0,24g bt Mg vo mt bnh cha sn 250ml dung dch CuSO4. Sau phn ng khi lng kim loi c trong bnh l 1,88g. Nng mol/lt ca dung dch CuSO4 trc phn ng l: A. 0,1M. B. 0,04M. C. 0,06M. D. 0,12M.

Cu 5.32 Nhng mt que st nng 5g vo 50ml dung dch CuSO4 15% (D = 1,12 g/ml). Khi que st c m kn th c khi lng l 5,154g. Nng C% ca dung dch CuSO4 cn li l

A. 8,87%. B. 9,6%. C. 8,9%. D. 9,53%.

Cu 5.33 Ngm mt l kim loi c khi lng 50g trong dung dch HCl. Sau khi thu c 336ml H2 (ktc) th thy khi lng l kim loi gim 1,68%. Kim loi lA. Fe.

B. Cu. C. Mg. D. Ba.

Cu 5.34 kh hon ton 30g hn hp gm CuO, Fe, FeO, Fe2O3 Fe3O4, MgO cn dng 7g kh CO. S gam cht rn thu c sau phn ng l : A. 23. B. 24. C. 25. D. 26.

Cu 5.35 Cho s : CaCO3 CaO CaCl2 Ca.

iu kin phn ng v ho cht thch hp cho s trn ln lt l

A. 9000C, dung dch HCl, in phn dung dch CaCl2.

B. 9000C, dung dch H2SO4 long, in phn CaSO4 nng chy.

C. 9000C, dung dch HNO3, in phn Ca(NO3)2 nng chy.

D. 9000C, dung dch HCl, in phn CaCl2 nng chy.

Cu 5.36 T dung dch CuSO4 iu ch Cu, ngi ta dng: A. Na. B. Ag. C. Fe. D. Hg.

Cu 5.37 in phn NaCl nng chy vi in cc tr, c mng ngn 2 in cc, ngi ta thu c

A. Na catot, Cl2 anot.

B. Na anot, Cl2 catot.

C. NaOH, H2 catot, Cl2 anot.

D. NaClO.

Cu 5.38 Mt loi qung st cha 80% Fe2O3 v 10% SiO2. Thnh phn % theo khi lng ca Fe v Si trong qung ny ln lt lA. 56%, 4,7%.

B. 54%, 3,7%. C. 53%, 2,7%. D. 52%. 4,7%.

Cu 5.39 in phn (in cc tr) dung dch mui sunfat ca mt kim loi ho tr II vi cng dng in 3A, sau 1930 giy thy khi lng catot tng 1,92 gam. Tn kim loi l A. Fe.

B. Cu. C. Al. D. Ni.

Cu 5.40 Ho tan m g Ba vo nc thu c 1 lt dung dch c pH = 12. Gi tr ca m l

A. 0,685g.

B. 2,15g.

C. 3,74g.

D. 3,15g.

Cu 5.41 in phn mui clorua nng chy ca kim loi M thu c 12g kim loi v 0,3 mol kh. Kim loi M l: A. Ca.

B. Mg. C. Al.

D. Fe.

Cu 5.42 in phn nng chy mui clorua ca kim loi M. catot thu c 7,2 gam kim loi v 6,72 lt kh (ktc). Mui clorua l: A. CaCl2.

B. MgCl2. C. NaCl. D. KCl.

Cu 5.43 in phn dung dch NaOH vi in cc tr, khng c mng ngn 2 in cc, ngi ta thu c sn phm l: A. NaOH.

B. NaClO. C. Cl2. D. NaCl.

Cu 5.44 Ion Mg2+ b kh trong trng hp

A. in phn dung dch MgCl2. B. in phn MgCl2 nng chy.

C. Th Na vo dung dch MgCl2. D. Cho dd MgCl2 tc dng dd Na2CO3.

Cu 5.45 Sau mt thi gian in phn dung dch CuCl2 thu c 1,12 lt kh (ktc) anot. Ngm mt inh Fe trong dung dch cn li sau in phn, phn ng xong thy khi lng inh Fe tng thm 1,2g. S gam Cu iu ch c t cc th nghim trn l: A. 12,8g.

B. 3,2g. C. 9,6g. D. 2g.

Cu 5.46 Ho tan hon ton 10g hn hp Al v Mg trong dung dch HCl thu c 0,5g kh H2. Khi c cn dung dch thu c s gam mui khan l A. 27,75g.B. 27,25g. C. 28,25g. D. 28,75g.

Cu 5.47 Cho 16,2g kim loi M (ho tr khng i) tc dng vi 0,15 mol O2, Cht rn sau phn ng tan trong dung dch HCl d to 13,44 lt kh (ktc). M l: A. Na.B. Al. C. Ca. D. Mg.

Cu 5.48 C 5 mu kim loi: Mg, Ba, Al, Fe, Cu. Nu ch dng thm dung dch H2SO4 long th c th nhn bit

A. Mg, Ba, Cu.

B. Mg, Al, Ba.

C. Mg, Ba, Al, Fe. D. Mg, Ba, Al, Fe, Cu.

Cu 5.49 Cho 19,2g Cu vo 500 ml dung dch NaNO3 1M, sau thm 500ml dung dch HCl 2M. Th tch kh NO (ktc) thu c l: A. 2,24 lt.

B. 3,36 lt. C. 4,48 lt. D. 6,72 lt.

Cu 5.50 C dung dch HCl 0,1M. Rt 250ml dung dch ny vo cc ng mt st. Sau mt thi gian, ngi ta lc ly dung dch c pH = 2. Khi lng st tham gia phn ng l:A. 0,7g.B. 0,14g. C. 1,26g. D. 0,63g.

Cu 5.51 Cho 0,11 mol kh CO2 i qua dung dch NaOH sinh ra 11,44g hn hp 2 mui. S g mi mui trong hn hp lA. 0,84 v 10,6.

B. 0.42 v 11,02. C. 1,68 v 9,76. D.2,52 v 8,92.

Cu 5.52 Cho dng kh CO2 lin tc i qua cc ng dung dch Ca(OH)2, lng kt ta thu c ln nht l

A. = .B. > .C. < . D. = 2 .

Cu 5.53 Hin tng to thnh cc thch nh trong cc hang ng c gii thch bng phn ng

A. CO2 + Ca(OH)2 CaCO3 + H2O.

B. Ca(HCO3)2 CaCO3 + CO2 + H2O.

C. Na2CO3 + Ca(OH)2 CaCO3 + 2 NaOH.

D. CaO + CO2 CaCO3.

Cu 5.54 Mt hn hp X gm Na v Al c trn theo t l mol 1: 2. Cho X vo mt lng nc d, sau khi kt thc phn ng thu c 8,96 lt kh H2 v m g mt cht rn. Gi tr ca m l: A. 2,7g.B. 0,27g. C. 5,4g. D. 0,54g.

Cu 5.55 Ho tan 1,8g mui sunfat ca mt kim loi nhm IIA trong nc ri pha long cho 50ml dung dch. phn ng ht vi dung dch ny cn 20ml dung dch BaCl2 0,75M. Cng thc ca mui sunfat l: A. BeSO4.

B. MgSO4. C. CaSO4. D. BaSO4.

Cu 5.56 Ho tan 2,0g mt kim loi ho tr II trong dung dch HCl, sau c cn dung dch thu c 5,55g mui khan. Tn kim loi l: A. canxi.

B. km.

C. magie.

D. bari.

Cu 5.57 Ho tan 58g mui CuSO4.5H2O trong nc c 500ml dung dch. Nng mol/l ca dung dch CuSO4 pha ch l: A. 0,464M.

B. 0,725M. C. 0,232M.

D. 0,3625M.

Cu 5.58 Cho cc cht: CaCO3, dung dch NaOH, dung dch NaHCO3, dung dch HCl. S phng trnh phn ng ho hc (dng phn t) xy ra khi cho cc cht tc dng vi nhau tng i mt l: A. 1.B. 2. C. 3. D. 4.

Cu 5.59 Dng mt thuc th phn bit Fe2O3 v Fe3O4, thuc th l

A. Dung dch HCl.B. Dung dch H2SO4 long.C. Dung dch HNO3. D. Dung dch CuSO4.

Cu 5.60 Cho phng trnh phn ng : a X + b Y(NO3)a a X(NO3)b + b Y

Bit dung dch X(NO3)b c mu xanh. Hai kim loi X, Y ln lt l

A. Cu, Fe.

B. Cu, Ag. C. Ag, Cu. D. Mg, Fe.

Cu 5.61 Cho a g kim loi M tc dng va vi V lt dung dch HCl 2M thu c (a + 21,3) g mui MCln. V c gi tr l: A. 0,6 lt.

B. 0,4 lt. C. 0,3 lt. D. 0,2 lt.

Cu 5.62 in phn nng chy 76g mui MCl2 thu c 0,64 mol kh Cl2 anot. Bit hiu sut phn ng in phn l 80%. Tn ca M l: A. Mg.B. Ca.

C. Cu. D. Zn.

Cu 5.63 Khuy mt thanh kim loi M ho tr 2 trong 200ml dung dch Cu(NO3)2 0,4M n khi dung dch ht mu xanh. Bit rng ton b Cu sinh ra u bm ht vo thanh M, khi lng thanh M tng 0,64g. Nguyn t khi ca M l: A. 24.

B. 56. C. 65. D. 27.

Cu 5.64 Khi phn ng vi Fe2+ trong mi trng axit d, dung dch KMnO4 b mt mu l do

A. MnO4- b kh thnh Mn2+.

B. MnO4- to thnh phc vi Fe2+.

C. MnO4- b oxi ho.

D. MnO4- khng mu trong mi trng axit.

Cu 5.65 C cc kim loi Cu, Ag, Fe v cc dung dch mui Cu(NO3)2, AgNO3, Fe(NO3)2. S phng trnh phn ng ho hc xy ra khi cho kim loi v mui tc dng vi nhau l: A. 1.B. 2. C. 3. D. 4.

Cu 5.66 Mt kim loi dng loi b tp cht Fe2(SO4)3 trong dung dch FeSO4 l

A. Fe.

B. Ag. C. Cu.

D. Ba.

Cu 5.67 Cho hn hp X gm Mg v Fe vo dung dch axit H2SO4 c nng n khi cc phn ng xy ra hon ton, thu c dung dch Y v mt phn st khng tan. Cht tan c trong dung dch Y l

A. MgSO4, Fe2(SO4)3, FeSO4.

B. MgSO4, Fe2(SO4)3.

C. MgSO4, FeSO4. D. MgSO4.

Cu 5.68 Trong mt cc nc cha a mol Al3+, b mol Cu2+, c mol Cl-, d mol SO42-. Biu thc lin h gia a, b, c, d l: A. 2a + 3b = 2c + d.B. 3a + 2b = c + 2d.C. 3a + 2b = c + d. D. 2a + 2b = c + d.

Cu 5.69 Cho Cu vo hn hp gm NaNO3 v H2SO4 long. Vai tr ca ion NO3- l

A. b kh. B. b oxi ho. C. va b kh va b oxi ho. D. khng b kh khng b oxi ho.

Cu 5.70 m g phoi st ngoi khng kh lu ngy b g to thnh hn hp A c khi lng 12g gm 4 cht rn. Cho A tc dng ht vi dung dch HNO3 long, d thu c 0,1 mol kh duy nht NO (ktc). Gi tr m l:

A. 9,8g.

B.10,08g.

C. 10,80g.

D. 9,08g.

Cu 5.71 11,2g st ngoi khng kh b g thnh 13,6g cht rn A. Cho A tc dng ht vi dung dch HNO3 long, d thu c V lt NO (ktc) duy nht. Gi tr ca V l A. 2,24 lt.B. 0,224 lt. C. 3,36 lt.D. 0,336 lt.

Cu 5.72 Oxi ho m g st ngoi khng kh, c 3g hn hp rn gm 4 cht. Ho tan ht X bng dung dch HNO3 thy c 0,025 mol kh NO thot ra. Gi tr m lA. 2,52g.B.0,252g.C. 25,2g.D.2,25g.Cu 5.73 Nung nng 16,8g bt st ngoi khng kh, sau mt thi gian thu c m g hn hp X gm cc oxit v st d. Ho tan ht hn hp X bng H2SO4 c, nng thu c 5,6 lt SO2 (ktc). Gi tr m l:

A. 24g.

B. 26g.

C. 20g.

D. 22g.

Cu 5.74 Hn hp X gm 2 kim loi u c ho tr khng i. Chia X thnh phn bng nhau:

- Phn 1: ho tan ht trong dung dch cha HCl v H2SO4 long thu c 3,36 lt H2 (ktc).

- Phn 2: ho tan ht trong dung dch HNO3 long thu c V lt kh NO (ktc). V c gi tr l

A. 2,24 lt.

B. 3,36 lt.

C. 4,48 lt.

D. 5,6 lt.

Cu 5.75 Hn hp X gm 2 kim loi X1, X2 c ho tr khng i, khng tc dng vi nc v ng trc Cu. Cho X tan ht trong dung dch CuSO4 d, thu c Cu. em Cu cho tan ht trong dung dch HNO3 long d, c 1,12 lt NO duy nht (ktc). Nu cho X tc dng ht vi dung dch HNO3 long, d th th tch N2 (ktc) l:

A. 0,224 lt.

B. 0,242 lt.

C. 3,63 lt.

D. 0,336 lt.

Cu 5.76 Cho 36,8g hn hp 2 mui cacbonat ca 2 kim loi thuc nhm II 2 chu k k tip nhau khi tc dng ht vi dung dch HCl thu c 0,4 mol kh CO2. Vy 2 kim loi l

A. Ca v Sr.

B. Sr v Ba.

C. Mg v Ca.

D. Be v Mg.

Cu 5.77 Cho 10,2g hn hp 3 kim loi Mg, Zn, Al tc dng ht vi dung dch HCl d thu c 5,6 lt kh (ktc). C cn dung dch th s gam mui khan thu c l: A. 28g.

B. 27,95g.C. 27g.

D. 29g.

Cu 5.78 Cho 11g hn hp nhiu kim loi trc hiro tc dng vi dung dch H2SO4 long, d thu c 6,72 lt kh (ktc). C cn dung dch th s gam mui khan thu c l: A. 3,98g.B. 39,8g.C. 35g.

D. 3,5g.

Cu 5.79 Cho 22g hn hp mui cacbonat ca kim loi IA v IIA tc dng vi dung dch HCl d thu c 0,3 mol kh (ktc). C cn dung dch th s gam mui khan l: A. 1,87g.

B. 2,53g. C. 18,7g.D. 25,3g.Cu 5.80 Cho 3,87g hn hp X gm Mg v Al vo 250ml dung dch Y cha axit HCl 1M v H2SO4 0,5M c dung dch Z v 4,368 lt H2 (ktc). Thnh phn % v khi lng Mg trong hn hp X l

A. 37,21 %.

B. 26%.

C. 35,01%.

D. 36%.

Cu 5.81 Ho tan hon ton 2,81g hn hp gm Fe2O3, Al2O3, MgO, ZnO trong 500ml dung dch axit H2SO4 0,2M (va ). C cn dung dch sau phn ng, mui sunfat khan thu c c khi lng l:

A. 6,81g.

B. 10,81g.

C. 5,81g.

D. 4,81g.

Cu 5.82 Cho 1,935g hn hp gm 2 kim loi Mg v Al tc dng vi 125ml dung dch gm HCl 1M v H2SO4 long 0,28M, thu c dung dch X v 2,184 lt H2 (ktc). C cn dung dch, thu c s gam mui l: A. 9,7325g.

B. 9,3725g.

C. 9,7532g.

D. 9,2357g.

Cu 5.83 Cho 10g hn hp gm Al v mt kim loi M (ho tr x) tc dng vi 100ml dung dch gm H2SO4 aM v HCl 3aM, thu c 5,6 lt H2 (ktc), dung dch X v 1,7g cht rn. Khi lng mui thu c l: A. 2,85g.

B. 2,855g.

C. 28,55g.

D. 28,5g.

Cu 5.84 Cho 7,2g Mg tc dng ht vi dung dch HNO3 long, d thu c 6,72 lt kh Y v dung dch Z. Lm bay hi Z thu c 47,4g cht rn khan. Cng thc phn t ca kh Y l: A. N2O.B. NO. C. N2.D. NO2.

Cu 5.85 t nng mt hn hp X gm Al v Fe3O4 trong iu kin khng c khng kh c hn hp Y. Chia Y lm 2 phn bng nhau:

Phn 1: tc dng vi dung dch NaOH d thu c 3,36 lt H2 (ktc).

Phn 2 : tc dng vi dung dch HCl d thu c 13,44 lt H2 (ktc). Thnh phn % v khi lng ca Al trong hn hp X l (hiu sut phn ng 100%)

A. 27,95%.

B. 2,795%.

C. 72,05%.

D. 7,205%.

Cu 5.86 Cho hn hp A gm bt Al v Fe3O4. Nung nng A nhit cao trong mi trng khng c khng kh phn ng xy ra hon ton thu c hn hp B. Nghin nh B ri chia lm 2 phn:

- Phn 1 (t) tc dng vi dung dch NaOH d thu c 1,176 lt H2 (ktc). Tch ring cht khng tan em ho tan trong dung dch HCl d thu c 1,008 lt kh (ktc)- Phn 2 (nhiu) tc dng vi dung dch HCl d thu c 6,552 lt kh (ktc).

Khi lng hn hp A l: A. 22,02g.

B. 8,1g.

C. 13,92g.

D. 3,465g.

Cu 5.87 Mt hn hp gm Na, Ba c t l mol 1:1 vo nc c dung dch A v 0,3 mol kh B. Th tch dung dch HCl 0,1 M trung ho dung dch A l: A. 0,4 Lt.

B.0,2 Lt. C.0,6 Lt. D.6 Lt.

Cu 5.88 Cho m gam hn hp X gm K v Al tc dng vi nc d thu c 0,25 mol kh. Nu cho m gam X tc dng vi Ba(OH)2 d thu c 0,4 mol kh (cc phn ng u xy ra hon ton). m c gi tr l:

A. 12,8g.

B. 16g.

C. 18g.

D. 10,95g.

Cu 5.89 Dng CO kh m g Fe2O3 nhit cao c 0,4 mol CO2 v hn hp rn X (gm 4 cht). Ho tan ht X cn 0,9 lt dung dch HCl 1M thy c 0,25 mol kh thot ra. Gi tr m l: A. 32g. B. 40g. C. 80g. D. 3,2g.

Cu 5.90 Dng CO kh m g Fe2O3 nhit cao thu c 1,1 gam CO2 v cht rn X gm 3 oxit. X phn ng va vi 0,25 lt dung dch H2SO4 long 0,5M. Gi tr m l: A. 8,0g.

B. 4,0g.

C. 1,6g.

D. 3,2g.

Cu 5.91 Cho 0,1 mol CO (ktc) t t i qua ng s nung nng ng 4 gam mt oxit st n khi phn ng xy ra hon ton. Hn hp kh thu c sau phn ng c t khi hi so vi H2 bng 20. Cng thc ca oxit st v thnh phn % CO2 theo th tch trong hn hp kh sau phn ng l

A. FeO ; 75%

B. Fe2O3 ; 75%C. Fe2O3 ; 65%

D. Fe3O4 ; 75%

Cu 5.92 Mt dung dch c cha 2 cation l Fe2+ (0,1 mol); Al3+ (0,2 mol) v 2 anion Cl- (x mol), SO42- (y mol). Khi c cn dung dch thu c 46,9 gam cht rn khan. x