Axitcacboxylic Thi Dai Hoc 20072012 Co Dap An

7/29/2019 Axitcacboxylic Thi Dai Hoc 20072012 Co Dap An

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Bin son GV Phm Khc TunMobilel:0972 98 4422

Axitcacboxylic qua cc nm thi i hcNm 2007 Khi ACu 1: Hn hp X gm axit HCOOH v axit CH3COOH (t l mol 1:1). Ly 5,3 gam hn hp X tc dng vi 5,75gam C2H5OH (c xc tc H2SO4 c) thu c m gam hn hp este (hiu sut ca cc phn ng este ho u bng80%). Gi tr ca m l (cho H = 1, C = 12, O = 16)

A. 10,12. B. 6,48. C. 8,10. D. 16,20Cu 2: t chy hon ton a mol axit hu c Y c 2a mol CO2. Mt khc, trung ha a mol Y cn va 2amol NaOH. Cng thc cu to thu gn ca Y l

A. HOOC-CH2-CH2-COOH. B. C2H5-COOH.C. CH3-COOH. D. HOOC-COOH.

Cu 3: Dung dch HCl v dung dch CH3COOH c cng nng mol/l, pH ca hai dung dch tng ng l x v yQuan h gia x v y l (gi thit, c 100 phn t CH3COOH th c 1 phn t in li)

A. y = 100x. B. y = 2x. C. y = x - 2. D. y = x + 2.Cu 4: Khi thc hin phn ng este ho 1 mol CH3COOH v 1 mol C2H5OH, lng este ln nht thu c l 2/3mol. t hiu sut cc i l 90% (tnh theo axit) khi tin hnh este ho 1 mol CH3COOH cn s mol C2H5OHl (bit cc phn ng este ho thc hin cng nhit )

A. 0,342. B. 2,925. C. 2,412. D. 0,456.

Nm 2007 Khi BCu 5: Cho cc cht: axit propionic (X), axit axetic (Y), ancol (ru) etylic (Z) v imetyl ete (T).Dy gm cc cht c sp xp theo chiu tng dn nhit si l

A. T, X, Y, Z. B. T, Z, Y, X. C. Z, T, Y, X. D. Y, T, X, Z.Cu 6: Trong mt bnh kn cha hi cht hu c X (c dng CnH2nO2) mch h v O2 (s mol O2gp i s mol cn cho phn ng chy) 139,9 oC, p sut trong bnh l 0,8 atm. t chy hon tonX sau a v nhit ban u, p sut trong bnh lc ny l 0,95 atm. X c cng thc phn t l

A. C2H4 O2. B. C3H6O2. C. C4H8O2. D. CH2O2.Cu 7: Cho glixerol (glixerin) phn ng vi hn hp axit bo gm C17H35COOH v C15H31COOH,

s loi trieste c to ra ti a l A. 6. B. 5. C. 3. D. 4Cu 8: t chy hon ton 0,1 mol mt axit cacboxylic n chc, cn va V lt O2 ( ktc), thuc 0,3 mol CO2 v 0,2 mol H2O. Gi tr ca V l

A. 8,96. B. 6,72. C. 4,48. D. 11,2

Nm 2008 Khi ACu 9: Dy gm cc cht c xp theo chiu nhit si tng dn t tri sang phi l:

A. CH3CHO, C2H5OH, C2H6, CH3COOH. B. CH3COOH, C2H6, CH3CHO, C2H5OH.C. C2H6, C2H5OH, CH3CHO, CH3COOH. D. C2H6, CH3CHO, C2H5OH, CH3COOH.

Cu 10: Cho s chuyn ho sau:

C3H4O2 + NaOH X + YX + H2SO4 long Z + TBit Y v Z u c phn ng trng gng. Hai cht Y, Z tng ng l: A. CH3CHO, HCOOH. B. HCOONa, CH3CHO.

C. HCHO, CH3CHO. D. HCHO, HCOOH.Cu 11: Trung ho 5,48 gam hn hp gm axit axetic, phenol v axit benzoic, cn dng 600 ml dungdch NaOH 0,1M. C cn dung dch sau phn ng, thu c hn hp cht rn khan c khi lng l

A. 4,90 gam. B. 6,84 gam. C. 8,64 gam. D. 6,80 gam

Chuyn ho hu c n thi i hc 2007 - 2012


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Nm 2008 Khi BCu 12: Axit cacboxylic no, mch h X c cng thc thc nghim (C3H4O3)n, vy cng thc phn tca X l A. C6H8O6. B. C9H12O9. C. C3H4O3. D. C12H16O12Cu 13: Cho 3,6 gam axit cacboxylic no, n chc X tc dng hon ton vi 500 ml dung dch gm

KOH 0,12M v NaOH 0,12M. C cn dung dch thu c 8,28 gam hn hp cht rn khan. Cngthc phn t ca X l A. CH3COOH. B. HCOOH. C. C3H7COOH. D. C2H5COOH.Nm 2009 Khi A

Cu 14: Cho hn hp X gm hai axit cacboxylic no, mch khng phn nhnh. t chy hon ton 0,3 mol hn hX, thu c 11,2 lt kh CO2 ( ktc). Nu trung ha 0,3 mol X th cn dng 500 ml dung dch NaOH 1M. Hai axi l:

A. HCOOH, HOOC-COOH. B. HCOOH, HOOC-CH2-COOH.C. HCOOH, C2H5COOH. D. HCOOH, CH3COOH.

Nm 2009 Khi BCu 15: Hn hp X gm axit Y n chc v axit Z hai chc (Y, Z c cng s nguyn t cacbon). Chia X thnh hphn bng nhau. Cho phn mt tc dng ht vi Na, sinh ra 4,48 lt kh H2 ( ktc). t chy hon ton phn hsinh ra 26,4 gam CO2. Cng thc cu to thu gn v phn trm v khi lng ca Z trong hn hp X ln lt l

A. HOOC-COOH v 42,86%. B. HOOC-COOH v 60,00%.C. HOOC-CH2-COOH v 70,87%. D. HOOC-CH2-COOH v 54,88%.

Cu 16: Khi cho a mol mt hp cht hu c X (cha C, H, O) phn ng hon ton vi Na hoc vi NaHCO3 tu sinh ra a mol kh. Cht X l

A. ancol o-hiroxibenzylic. B. axit aipic.C. axit 3-hiroxipropanoic. D. etylen glicol.

Cu 17: Dy gm cc cht c sp xp theo chiu tng dn nhit si t tri sang phi l:

A. CH3COOH, HCOOH, C2H5OH, CH3CHO. B. HCOOH, CH3COOH, C2H5OH, CH3CHO.C. CH3COOH, C2H5OH, HCOOH, CH3CHO. D. CH3CHO, C2H5OH, HCOOH, CH3COOH.

Cu 18: Cho 0,04 mol mt hn hp X gm CH2=CH-COOH, CH3COOH v CH2=CH-CHO phn ng va vdung dch cha 6,4 gam brom. Mt khc, trung ho 0,04 mol X cn dng va 40 ml dung dch NaOH 0,75 MKhi lng ca CH2=CH-COOH trong X l

A. 0,72 gam. B. 1,44 gam. C. 2,88 gam. D. 0,56 gam.

Nm 2010 Khi ACu 19: Hn hp M gm ancol no, n chc X v axit cacboxylic n chc Y, u mch h v c cng s nguyn t Ctng s mol ca hai cht l 0,5 mol (s mol ca Y ln hn s mol ca X). Nu t chy hon ton M th thu c 33,6 kh CO2 (ktc) v 25,2 gam H2O. Mt khc, nu un nng M vi H2SO4 c thc hin phn ng este ho (hiu sut

80%) th s gam este thu c lA. 18,24. B. 34,20. C. 22,80. D. 27,36.Cu 20: Hn hp gm 0,1 mol mt axit cacboxylic n chc v 0,1 mol mui ca axit vi kim loi kim c tnkhi lng l 15,8 gam. Tn ca axit trn l

A. axit butanoic. B. axit propanoic. C. axit metanoic. D. axit etanoic.Cu 21: Cho hn hp X gm ancol metylic v hai axit cacboxylic (no, n chc, k tip nhau trong dy ng ng) tdng ht vi Na, gii phng ra 6,72 lt kh H 2 (ktc). Nu un nng hn hp X (c H2SO4 c lm xc tc) th cc chtrong hn hp phn ng va vi nhau to thnh 25 gam hn hp este (gi thit phn ng este ho t hiu su100%). Hai axit trong hn hp X l

A. C3H7COOH v C4H9COOH. B. C2H5COOH v C3H7COOH.



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C. HCOOH v CH3COOH. D. CH3COOH v C2H5COOH.

Nm 2010 Khi BCu 22: Hn hp Z gm hai axit cacboxylic n chc X v Y (MX> MY) c tng khi lng l 8,2 gam. Cho Z tc dva vi dung dch NaOH, thu c dung dch cha 11,5 gam mui. Mt khc, nu cho Z tc dng vi mt lng dung dch AgNO3 trong NH3, thu c 21,6 gam Ag. Cng thc v phn trm khi lng ca X trong Z l

A. C2H3COOH v 43,90%. B. C3H5COOH v 54,88%.C. C2H5COOH v 56,10%. D. HCOOH v 45,12%.Cu 23: Dy gm cc cht u tc dng vi H2 (xc tc Ni, to), to ra sn phm c kh nng phn ng vi Na l:

A. C2H3CHO, CH3COO C2H3, C6H5COOH. B. C2H3CH2OH, CH3CO CH3, C2H3COOH.C. CH3O C2H5, CH3CHO, C2H3COOH. D. C2H3CH2OH, C2H3CHO, CH3COOH

Cu 24: Hn hp X gm axit panmitic, axit stearic v axit linoleic. trung ho m gam X cn 40 ml dung dch NaO1M. Mt khc, nu t chy hon ton m gam X th thu c 15,232 lt kh CO 2 (ktc) v 11,7 gam H2O. S mol caxit linoleic trong m gam hn hp X l

A. 0,010. B. 0,015. C. 0,020. D. 0,005.Cu 25: Cho s phn ng:

2 20 0,

+ +

+ ++

H O BrCuO

H t t HStiren X Y

Trong X, Y, Z u l cc sn phm chnh.

Cng thc ca X, Y, Z ln lt l:A. C6H5 CH2 CH2OH, C6H5 CH2CHO, m-Br C6H4 CH2COOH.B. C6H5CHOH CH3, C6H5CO CH3, m-Br C6H4CO CH3.C. C6H5 CH2 CH2OH, C6H5 CH2CHO, C6H5 CH2COOH.D. C6H5CHOH CH3, C6H5CO CH3, C6H5CO CH2Br

Nm 2011 Khi ACu 26: Hn hp X gm axit axetic, axit fomic v axit oxalic. Khi cho m gam X tc dng vi NaHCO 3 (d) th thu 15,68 lt kh CO2(ktc). Mt khc, t chy hon ton m gam X cn 8,96 lt kh O 2(ktc), thu c 35,2 gam CO2vmol H2O. Gi tr ca y l

A. 0,8. B. 0,3. C. 0,2. D. 0,6.

Cu 27: t chy hon ton x mol axit cacboxylic E, thu c y mol CO2 v z mol H2O (viz = y x ). Cho x mol E tc dng vi NaHCO3 (d) thu c y mol CO2. Tn ca E l

A. axit oxalic. B. axit fomic. C. axit aipic. D. axit acrylic.Cu 28: Trung ho 3,88 gam hn hp X gm hai axit cacboxylic no, n chc, mch h bng dung dch NaOH, c cton b dung dch sau phn ng thu c 5,2 gam mui khan. Nu t chy hon ton 3,88 gam X th th tch oxi (ktcn dng l

A. 1,12 lt. B. 3,36 lt. C. 4,48 lt. D. 2,24 lt.Cu 29: t chy hon ton x gam hn hp gm hai axit cacboxylic hai chc, mch h v u c mt lin kt i C=trong phn t, thu c V lt kh CO2(ktc) v y mol H2O. Biu thc lin h gia cc gi tr x, y v V l

A. V =28

( 30 )55

x y . B. V =28

( 62 )95

x y C. V =28

( 30 )55

x y+ . D. V =28

( 62 )95

x y+ .

Cu 30: Cho axit salixylic (axit o-hiroxibenzoic) phn ng vi anhirit axetic, thu c axit axetylsalixylic (o-CH3COO- C6H4-COOH) dng lm thuc cm (aspirin). phn ng hon ton vi 43,2 gam axit axetylsalixyliccn va V lt dung dch KOH 1M. Gi tr ca V l

A. 0,72. B. 0,48. C. 0,96. D. 0,24.Cu 31: Ho hi 15,52 gam hn hp gm mt axit no n chc X v mt axit no a chc Y (s mol X ln hn s mY), thu c mt th tch hi bng th tch ca 5,6 gam N2(o trong cng iu kin nhit , p sut). Nu t chy tob hn hp hai axit trn th thu c 10,752 lt CO2(ktc). Cng thc cu to ca X, Y ln lt l

A. CH3 -COOH v HOOC- CH2 -COOH . B. H-COOH v HOOC-COOH.C. CH3-COOH v HOOC- CH2 CH2-COOH. D. CH3CH2-COOH v HOOC-COOH



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Nm 2011 Khi BCu 32: Cho s phn ng:

(1)CH3CHO X1 X2

(2)C2 H5Br Y1 Y2 Y3

Bit Y3 c cng thc phn t C6H10O2. Tn gi ca X lA. anehit acrylic. B. anehit axetic. C. anehit metacrylic. D. anehit propionic

Cu 33: Cho cc pht biu sau:(a) Anehit va c tnh oxi ho va c tnh kh.(b) Phenol tham gia phn ng th brom kh hn benzen.(c) Anehit tc dng vi H2 (d) c xc tc Ni un nng, thu c ancol bc mt.(d) Dung dch axit axetic tc dng c vi Cu(OH)2.(e) Dung dch phenol trong nc lm qu tm ho .(g) Trong cng nghip, axeton c sn xut t cumen.S pht biu ng l

A. 4. B. 3. C. 5. D. 2.Cu 34: Cho s phn ng:

(1)CH3CHO X1 X2

(2)C2 H5Br Y1 Y2 Y3Cc cht hu c X1, X2, Y1, Y2, Y3 l cc sn phm chnh. Hai cht X2, Y3 ln lt l

A. axit 2-hiroxipropanoic v axit propanoic. B. axit axetic v axit propanoic.C. axit axetic v ancol propylic. D. axit 3-hiroxipropanoic v ancol propylic.

Cu 35: Hn hp X gm hai axit cacboxylic no, mch h Y v Z (phn t khi ca Y nh hn ca Z). t chy hoton a mol X, sau phn ng thu c a mol H2O. Mt khc, nu cho a mol X tc dng vi lng d dung dch NaHCO

th thu c 1,6a mol CO2. Thnh phn % theo khi lng ca Y trong X lA. 46,67%. B. 74,59%. C. 25,41%. D. 40,00%.

Nm 2012 Khi A

Cu 36: t chy hon ton 7,6 gam hn hp gm mt axit cacboxylic no, n chc, mch h v mt ancol chc (c s nguyn t cacbon trong phn t khc nhau) thu c 0,3 mol CO2 v 0,4 mol H2O. Thc hin phn este ha 7,6 gam hn hp trn vi hiu sut 80% thu c m gam este. Gi tr ca m l

A. 4,08. B. 6,12. C. 8,16. D. 2,04.Cu 37: Hn hp X gm axit fomic, axit acrylic, axit oxalic v axit axetic. Cho m gam X phn ng ht vi dundch NaHCO3 thu c 1,344 lt CO2 (ktc). t chy hon ton m gam X cn 2,016 lt O2 (ktc), thu c 4,gam CO2 v a gam H2O. Gi tr ca a l

A. 1,62. B. 1,80. C. 3,60. D. 1,44.Cu 38: Ha hi 8,64 gam hn hp gm mt axit no, n chc, mch h X v mt axit no, a chc Y (c mcacbon h, khng phn nhnh) thu c mt th tch hi bng th tch ca 2,8 gam N2 (o trong cng iu kinhit , p sut). t chy hon ton 8,64 gam hn hp hai axit trn thu c 11,44 gam CO 2. Phn trm khlng ca X trong hn hp ban u l

A. 72,22%. B. 65,15%. C. 27,78%. D. 35,25%.

Nm 2012 Khi BCu 39: Cho phng trnh ha hc: 2X + 2NaOH 2CH4 + K2CO3 + Na2CO3


+HCN

H+ , to

+ Mgete

+ CO2 + HCl

H+ , to

+ Mgete

+ CO2 + HCl


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Bin son GV Phm Khc TunMobilel:0972 98 4422X l :A. CH2(COONa)2. B. CH2(COOK)2. C. CH3COONa. D. CH3COOK

Cu 40: Hn hp X gm hai axit cacboxylic n chc. t chy hon ton 0,1 mol X cn 0,24 mol O2, thu cCO2 v 0,2 mol H2O. Cng thc hai axit l A. CH3COOH v C2H5COOH. B. CH2=CHCOOH v CH2=C(CH3)COOH.

C. HCOOH v C2H5COOH. D. CH3COOH v CH2=CHCOOH.

Cu 41: un nng m gam hn hp X gm cc cht c cng mt loi nhm chc vi 600 ml dung dch NaOH1,15M, thu c dung dch Y cha mui ca mt axit cacboxylic n chc v 15,4 gam hi Z gm cc ancol. Chton b Z tc dng vi Na d, thu c 5,04 lt kh H 2 (ktc). C cn dung dch Y, nung nng cht rn thu vi CaO cho n khi phn ng xy ra hon ton, thu c7,2 gam mt cht kh. Gi tr ca m l

A. 34,51. B. 22,60. C. 34,30. D. 40,60.Cu 42: Cho axit cacboxylic X phn ng vi cht Y thu c mt mui c cng thc phn tC3H9O2N (sn phm duy nht). S cp cht X v Y tha mn iu kin trn lA. 2. B. 3. C. 1. D. 4

Cu 43: Cho phenol (C6H5OH) ln lt tc dng vi (CH3CO)2O v cc dung dch: NaOH, HCl, Br2, HNO3,CH3COOH. S trng hp xy ra phn ng l

A. 3. B. 2. C. 1. D. 4.


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Axitcacboxylic Thi Dai Hoc 20072012 Co Dap An