Trắc nghiệm andehit xeton axit

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ANEHIT-XETON-AXIT CACBOXYLIC Cu 1: Mt anehit c cng thc tng qut l CnH2n + 2 2a m (CHO)m. Cc gi tr n, a, m ln lt c xc nh l A. n > 0, a 0, m 1. B. n 0, a 0, m 1. C. n > 0, a > 0, m > 1. D. n 0, a > 0, m 1. Cu 2: Co bao nhiu ng phn cu tao C5H10O co kha nng tham gia phan ng trang gng ? A. 2. B. 3. C. 4. D. 5. Cu 3: Co bao nhiu xeton co cng thc phn t l C5H10O ? A. 1. B. 2. C. 3. D. 4. Cu 4: Co bao nhiu ng phn cu tao C6H12O tham gia phan ng trang gng ? A. 6. B. 7. C. 8. D. 9. Cu 5: Co bao nhiu ancol C5H12O khi tac dung vi CuO un nong cho ra anehit ? A. 1. B. 2. C. 3. D. 4. Cu 6: CTGN ca 1 anehit no, a chc, mch h l C2H3O. CTPT ca n l A. C8H12O4. B. C4H6O. C. C12H18O6. D. C4H6O2. Cu 7: CTGN ca anehit no, a chc, mch h l C2H3O. Anehit c s ng phn l A. 2. B. 4. C. 1. D. 3. Cu 8: (CH3)2CHCHO c tn l A. isobutyranehit. B. anehit isobutyric. C. 2-metyl propanal. D. A, B, C u ng. Cu 9: CTPT ca ankanal c 10,345% H theo khi lng l A. HCHO. B. CH3CHO. C. C2H5CHO. D. C3H7CHO. Cu 10: Anehit A (ch cha mt loi nhm chc) co %C va %H (theo khi lng) ln lt la 55,81 va 6,97. Chi ra phat biu sai A. A la anehit hai chc. B. A con co ng phn la cac axit cacboxylic. C. A la anehit no. D. Trong phan ng trang gng, mt phn t A chi cho 2 electron. Cu 11: Trong cung iu kin nhit va ap sut, 1 lit hi anehit A co khi lng bng khi lng 1 lit CO2. A la A. anehit fomic. B. anehit axetic. C. anehit acrylic. D. anehit benzoic. Cu 12: t chay hoan toan p mol anehit X c q mol CO2 va t mol H2O. Bit p = q - t. Mt khac 1 mol X trang gng c 4 mol Ag. X thuc day ng ng anehit A. n chc, no, mch h. C. hai chc cha no (1 ni i C=C). B. hai chc, no, mch h. D. nhi chc cha no (1 ni ba CC). Cu 13: Anehit a chc A chay hoan toan cho mol CO2 - mol H2O = mol A. A la A. anehit no, mch h. B. anehit cha no. C. anehit thm. D. anehit no, mch vong. Cu 14: t chay anehit A c mol CO2 = mol H2O. A la A. anehit no, mch h, n chc. B. anehit n chc, no, mch vong. C. anehit n chc co 1 ni i, mch h. D. anehit no 2 chc, mch h. Cu 15: un nng V lt hi anehit X vi 3V lt kh H2 (xc tc Ni) n khi phn ng xy ra hon ton ch thu c mt hn hp kh Y c th tch 2V lt (cc th tch kh o cng iu kin nhit , p sut). Ngng t Y thu c cht Z ; cho Z tc dng vi Na sinh ra H2 c s mol bng s mol Z phn ng. Cht X l anehit A. no, hai chc. B. khng no (cha mt ni i C=C), hai chc. C. no, n chc. D. khng no (cha mt ni i C=C), n chc. Cu 16: Focmon l dung dch anehit focmic trong nc c nng : A 2-5%. B. 50-70%. C. 10-20%. D. 37-40%. Cu 17: CH3CHO c th to thnh trc tip t A. CH3COOCH=CH2. B. C2H2. C. C2H5OH. D. Tt c u ng. Cu 18: Qu trnh no sau y khng to ra anehit axetic ? A. CH2=CH2+ H2O (to, xc tc HgSO4). B. CH2=CH2 + O2 (to, xc tc).

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C. CH3COOCH=CH2 + dung dch NaOH (to).

D. CH3CH2OH + CuO (to).

Cu 19: Dy gm cc cht u iu ch trc tip (bng mt phn ng) to ra anehit axetic l A. C2H5OH, C2H2, CH3COOC2H5. B. HCOOC2H3, C2H2, CH3COOH. C. C2H5OH, C2H4, C2H2. D. CH3COOH, C2H2, C2H4. Cu 20: Mt axit cacboxylic c cng thc tng qut l CnH2n + 2 2a m (COOH)m. Cc gi tr n, a, m ln lt c xc nh l A. n > 0, a 0, m 1. B. n 0, a 0, m 1. C. n > 0, a > 0, m > 1. D. n 0, a > 0, m 1. Cu 21: A la axit no h, cng thc CxHyOz. Chi ra mi lin h ung A. y = 2x-z +2. B. y = 2x + z-2. C. y = 2x. D. y = 2x-z. Cu 22: A la axit cacboxylic mach h, cha no (1 ni i C=C), cng thc CxHyOz. Chi ra mi lin h ung A. y = 2x. B. y = 2x + 2-z. C. y = 2x-z. D. y = 2x + z-2. Cu 23: Axit khng no, n chc c mt lin kt i trong gc hirocacbon c cng thc ph hp l A. CnH2n+1-2kCOOH ( n 2). B. RCOOH. C. CnH2n-1COOH ( n 2). D. CnH2n+1COOH ( n 1). Cu 24: Axit cacboxylic A co cng thc n gian nht la C3H4O3. A co cng thc phn t l A. C3H4O3. B. C6H8O6. C. C18H24O18. D. C12H16O12. Cu 25: CTGN ca mt axit hu c X l CHO. t chy 1 mol X thu c di 6 mol CO2. CTCT ca X l A. CH3COOH. B. CH2=CHCOOH. C. HOOCCH=CHCOOH. D. Kt qu khc. Cu 26: Mt axit no A c CTGN l C2H3O2. CTPT ca axit A l A. C6H9O6. B. C2H3O2. C. C4H6O4. D. C8H12O8. Cu 27: C4H6O2 c s ng phn mch h thuc chc axit l A. 4. B. 3. C. 5. D. tt c u sai. Cu 28: Axit cacboxylic n chc mach h phn nhanh (A) co % O (theo khi lng) la 37,2. Chi ra phat biu sai A. A lam mt mau dung dich brom. B. A la nguyn liu iu ch thuy tinh hu c. C. A co ng phn hinh hoc. D. A co hai lin trong phn t. Cu 29: Axit hu c A c thnh phn nguyn t gm 40,68% C ; 54,24% O. trung ha 0,05 mol A cn 100ml dung dch NaOH 1M. CTCT ca A l A. HOOCCH2CH2COOH. B. HOOCCH(CH3)CH2COOH. C. HOOCCH2COOH. D. HOOCCOOH. Cu 30: Hp cht CH3CH2(CH3)CH2CH2CH(C2H5)COOH c tn quc t l A. axit 2-etyl-5-metyl hexanoic. B. axit 2-etyl-5-metyl nonanoic. C. axit 5-etyl-2-metyl hexanoic. D. tn gi khc. Cu 31: tng hiu sut ca phn ng este ha ngi ta cn: A. Tng nng axit. B. Tng nng ru. C. Dng H2SO4 c ht nc. D. Tt c u ng. Cu 32: Trong s cc cht: ancol n-propylic, axeton, axit propionic v axit butyric, cht c nhit si thp nht l: A. Ancol n-propylic B. Axeton C.Axit propionic D. Axit butyric. Cu 33: Cho cc cht: HCHO (I); CH3CHO (II); C2H5Cl (III); CH3OH (IV).Chiu gim dn nhit si ca cc cht: A. (IV) > (III) > (II) > (I). B. (IV) > (II) > (III) > (I) C. (IV) > (I) > (III) > (II) D. (IV) > (II) > (I) > (III) Cu 34: Cho cc cht C2H5Cl (a); CH3CHO (b); CH3COOH (c); CH3CH2OH (d). Nhit si ca cc cht gim dn nh sau: A. (d) > (b) > (c) > (a) B. (a) > (c) > (b) > (d) C. (c) > (d) > (a) > (b) D. (c) > (a) > (b) > (d) Cu 35: Th t sp xp theo s tng dn tnh axit ca CH3COOH ; C2H5OH ; CO2 v C6H5OH l A. C6H5OH < CO2 < CH3COOH < C2H5OH. B. CH3COOH < C6H5OH < CO2 < C2H5OH.

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C. C2H5OH < C6H5OH < CO2 < CH3COOH.

D. C2H5OH < CH3COOH < C6H5OH < CO2.

Cu 36: Cho 3 axit ClCH2COOH , BrCH2COOH, ICH2COOH, dy sp xp theo th t tng dn tnh axit l A. ClCH2COOH < ICH2COOH < BrCH2COOH. B. ClCH2COOH < BrCH2COOH < ICH2COOH. C. ICH2COOH < BrCH2COOH < ClCH2COOH. D. BrCH2COOH < ClCH2COOH < ICH2COOH. Cu 37: Gi tr pH ca cc axit CH3COOH, HCl, H2SO4 c sp xp theo th t tng dn l A. H2SO4, CH3COOH, HCl. B. CH3COOH, HCl , H2SO4. C. H2SO4, HCl, CH3COOH. D. HCl, CH3COOH, H2SO4. Cu 38: Trong cc phn ng este ha gia ancol v axit hu c th cn bng s chuyn dch theo chiu thun khi ta A. dng cht ho nc tch nc. B. chng ct ngay tch este ra. C. cho ancol d hoc axit d. D. tt c u ng. Cu 39: t chay hoan toan hn hp X gm 2 axit cacboxylic c mol CO2 = mol H2O. X gm A. 1 axit n chc, 1 axit a chc. B. 1 axit no, 1 axit cha no. C. 2 axit n chc no mach vong D. 2 axit no, mch h n chc. Cu 40: trung hoa 0,2 mol hn hp X gm 2 axit cacboxylic cn 0,3 mol NaOH. X gm co A. 2 axit cung day ng ng. B. 1 axit n chc, 1 axit hai chc. C. 2 axit a chc. D. 1 axit n chc, 1 axit a chc. Cu 41: t chay hoan toan axit cacboxylic A bng lng va u oxi c hn hp (khi va hi) co ti khi so vi H2 la 15,5. A la axit A. n chc no, mch h B. n chc co 1 ni i (C = C), mch h. C. a chc no, mch h. D. axit no,mch h, hai chc, Cu 42: t chy ht 1 th tch hi axit A thu c 2 th tch CO2 o cng iu kin, A l A. HCOOH. B. HOOCCOOH. C. CH3COOH. D. B v C ng. Cu 43: C th iu ch CH3COOH t A. CH3CHO. B. C2H5OH. C. CH3CCl3. D. Tt c u ng. Cu 44: Cho cc cht : CaC2 (I), CH3CHO (II), CH3COOH (III), C2H2 (IV). S chuyn ha ng iu ch axit axetic l A. I IV II III. B. IV I II III. C. I II IV III. D. II I IV III. Cu 45: Dy gm cc cht c th iu ch trc tip (bng mt phn ng) to ra axit axetic l A. CH3CHO, C2H5OH, C2H5COOCH3. B. CH3CHO, C6H12O6 (glucoz), CH3OH. C. CH3OH, C2H5OH, CH3CHO. D. C2H4(OH)2, CH3OH, CH3CHO. X (1); X + H3O+ (un nng) Y(2) Cu 46: Cho s chuyn ha : CH3CH2Cl + KCN Cng thc cu to ca X, Y ln lt l A. CH3CH2NH2, CH3CH2COOH. B. CH3CH2CN, CH3CH2CHO. C. CH3CH2CN, CH3CH2COOH. D. CH3CH2CN, CH3CH2COONH4. Cu 47: Cht c nhit si cao nht l A. CH3CHO. B. C2H5OH. C. CH3COOH. D. C2H6. Cu 49: Chi ra th t tng dn nhit si ca cc cht ? A. CH3CHO; C2H5OH ; CH3COOH. C. C2H5OH ; CH3COOH ; CH3CHO. B. CH3CHO ;CH3COOH ; C2H5OH. D. CH3COOH ; C2H5OH ; CH3CHO. Cu 50: Nhit si ca cc cht c sp xp theo th t tng dn l A. CH3OH < CH3CH2COOH < NH3 < HCl. B. C2H5Cl < CH3COOH < C2H5OH. C. C2H5Cl < CH3COOCH3 < C2H5OH < CH3COOH. D. HCOOH < CH3OH < CH3COOH < C2H5F. Cu 51: Cho cac cht CH3CH2COOH (X) ; CH3COOH ( Y) ; C2H5OH ( Z) ; CH3OCH3 (T). Day gm cac cht c sp xp tng dn theo nhit si la A. T, X, Y, Z. B. T, Z, Y, X. C. Z, T, Y, X. D. Y, T, Z, X. Cu 52: Nhit si ca ancol etylic (I), anehit axetic (II), axit axetic (III) v axit propionic (IV) sp xp theo th t gim dn l A. IV > I > III > II. B. IV > III > I > II. C. II > III > I > IV. D. I > II > III > IV. Cu 53: A la ancol n chc no h, B la axit cacboxylic no h n chc. Bit MA=MB. Phat biu ung l A. A, B la ng phn B. A, B co cung s cacbon trong phn t.

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C. A hn B mt nguyn t cacbon.

D. B hn A mt nguyn t cacbon.

Cu 54: Hai hp cht hu c X v Y c cng CTPT C3H4O2. X tc dng vi CaCO3 to ra CO2. Y tc dng vi dung dch AgNO3/NH3 to Ag. CTCT thu gn ph hp ca X, Y ln lt l A. HCOOCH=CH2, CH3COOCH3. B. CH3CH2COOH, HCOOCH2CH3. C. HCOOCH=CH2, CH3 CH2COOH. D. CH2=CHCOOH, HOCCH2CHO. OH Cu 55: Cho chui phn ng : C2H6O X axit axetic + CH 3 Y. CTCT ca X, Y ln lt l A. CH3CHO, CH3CH2COOH. B. CH3CHO, CH3COOCH3. C. CH3CHO, CH2(OH)CH2CHO. D. CH3CHO, HCOOCH2CH3. Cu 56: Cho s phn ng sau : , H2 CH CH 2HCHO butin-1,4-iol H 2 Y -O Z xt Y v Z ln lt l A. HOCH2CH2CH2CH3 ; CH2=CHCH=CH2. B. HOCH2CH2CH2CH2OH ; CH2=CHCH2CH3. C. HOCH2CH2CH2CH2OH ; CH2=CHCH = CH2. D . HOCH2CH2CH2CH2OH ; CH3CH2CH2CH3. Cu 57: Cho s chuyn ha sau: 2+ , Hirocacbon A Br2 B NaOH C CuO as D O 2 , Mn HOOCCH2COOH. Vy A l CH2 - CH 2

A. CH2 B. C3H8. C. CH2=CHCH3. D. CH2=CHCOOH. Cu 58: Cho chui phn ng sau , 2 C3H6 H 2 B1 Cl 2 B2 (spc) OH O B3 O 2 , B4 . Vy B4 l Ni , as Cu /H A. CH3COCH3. B. A v C ng. C. CH3CH2CHO. D. CH3CHOHCH3. Cu 59: Xt cc chui bin ha sau: , - H 2O, - H 2 , xt a. A H 2 B C cao su Buna. Ni CTCT ca A l A. OHCCH2CH2CHO. B. CH3CHO. C. OHC(CH2)2CH2OH. D. A, B, C u ng. , b. A H 2 B C cao su Buna. Ni CTCT ca A l A. OHCCH2CH2CHO. B. CH3CHO. C. HOC(CH2)2CH2OH. D. A, B, C u ng. Cu 60: Cho s chuyn ha sau : 2+ , 2 C2H6 Br2 A OH O B O 2 , C O 2 , Mn D. Vy D l as Cu /H A. CH3CH2OH. B. CH3CHO. C. CH3COCH3. D. CH3COOH. Cu 61: Cho s chuyn ha sau Br2 C2H4 A1 NaOH A2 CuO A3 Cu(OH) 2 A4 H 2SO 4 A5. , NaOH Chn cu tr li sai A. A5 c CTCT l HOOCCOOH. B. A4 l mtianehit. C. A2 l mt iol. D. A5 l mt iaxit. Cu 62: Cho chui bin ha sau : C2H5OH A C2H5OH

C a. Cht A c th l A. natri etylat. b. Cht B c th l A. etilen. c. Cht C c th l A. etanal. B. anehit axetic. B. tinh bt. B. axetilen.

C2H5OH

B C. etyl axetat. C. glucoz. C. etylbromua. D. A, B, C u ng. D. A, B, C u sai. D. A, C u ng.

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Cu 63: Mt hp cht c thnh phn l 40% C ; 6,7% H v 53,3% O. Hp cht c CTGN l A. C6H8O. B. C2H4O. C. CH2O.

D.

C3H6O.

Cu 64: Pht biu ng l A. Axit cha no khi chy lun cho s mol CO2 ln hn s mol H2O. B. anehit tc dng vi H2 (xc tc Ni) lun to ancol bc nht. C. anehit va c tnh kh va c tnh oxi ha. D. A, B, C u ng. Cu 65: Cho cc cht sau : (1) CH2=CHCH2OH ; (2) CH3CH2CHO ; (3) CH3COCH3. Pht biu ng l A. 1, 2, 3 l cc ng phn. B. 3 tc dng vi H2 (xc tc Ni) to 1 ancol bc 2. C. 1, 2 tc dng vi H2 (xc tc Ni) u to ra 1 ancol. D. A, B, C u ng. Cu 66: Cho 4 hp cht c CTPT l M : C3H6O ; N : C3H6O2 ; P : C3H4O ; Q : C3H4O2. Bit : M v P cho phn ng trng gng ; N v Q phn ng c vi dung dch NaOH ; Q phn ng vi H 2 to thnh N ; oxi ha P thu c Q. a. M v P theo th t l A. C2H5COOH ; CH2=CHCOOH. B. C2H5CHO ; CH2=CHCHO. C. CH2=CHCOOH ; C2H5COOH . D. CH2=CHCHO ; C2H5CHO. b. N v Q theo th t l A. C2H5COOH ; CH2 = CHCOOH. B. CH2=CHCOOH ; C2H5COOH. C. C2H5CHO ; CH2=CHCHO. D. CH2=CHCHO ; C2H5CHO. Cu 67: Cho cc cht sau: (1) CH2=CHCH2OH ; (2) HOCCH2CHO ; (3) HCOOCH=CH2. Pht biu ng l A. 1, 2, 3 tc dng c vi Na. B. Trong A, B, C c 2 cht cho phn ng trng gng. C. 1, 2, 3 l cc ng phn. D. 1, 2, 3 chy u cho s mol H2O b hn s mol CO2. Cu 68: Hai hp cht hu c X, Y c cng cng thc phn t C3H6O2. C X v Y u tc dng vi Na ; X tc dng c vi NaHCO3 cn Y c kh nng tham gia phn ng trng bc. Cng thc cu to ca X v Y ln lt l A. C2H5COOH v HCOOC2H5. B. HCOOC2H5 v HOCH2OCH3. C. HCOOC2H5 v HOCH2CH2CHO. D. C2H5COOH v CH3CH(OH)CHO. Cu 69: Cho dy cc cht : HCHO, CH3COOH, HCOONa, HCOOH, C2H5OH, HCOOCH3. S cht trong dy tham gia phn ng trng gng l A. 3. B. 6. C. 4. D. 5. Cu 70: Cho cc cht sau : phenol, etanol, axit axetic, natri phenolat, natri hiroxit. S cp cht tc dng c vi nhau l A. 4. B. 3. C. 2. D. 1. Cu 71: Hai cht hu c X1 v X2 u c khi lng phn t bng 60 vC. X1 c kh nng phn ng vi: Na, NaOH, Na2CO3. X2 phn ng vi NaOH (un nng) nhng khng phn ng Na. Cng thc cu to ca X1, X2 ln lt l A. CH3COOH, CH3COOCH3. B. (CH3)2CHOH, HCOOCH3. C. HCOOCH3, CH3COOH. D. CH3COOH, HCOOCH3. Cu 72: Cho tt c cc ng phn mch h, c cng cng thc phn t C2H4O2 ln lt tc dng vi : Na, NaOH, NaHCO3. S phn ng xy ra l A. 2. B. 5. C. 4. D. 3. Cu 73: Cho cc cht sau : CH3CH2CHO (1) ; CH2=CHCHO (2) ; CHCCHO (3) ; CH2=CHCH2OH (4) ;(CH3)2CHOH (5). Nhng cht phn ng hon ton vi lng d H2 (Ni, to) cng to ra mt sn phm l A. (2), (3), (4), (5). B. (1), (2), (4), (5). C. (1), (2), (3). D. (1), (2), (3), (4). Cu 74: Cho cc hp cht hu c : C2H4 ; C2H2 ; CH2O ; CH2O2 (mch h); C3H4O2 (mch h, n chc). Bit C3H4O2 khng lm chuyn mu qu tm m. a. S cht tc dng c vi dung dch AgNO3/NH3 to ra Ag l A. 2. B. 4. C. 3. D. 5. b. S cht tc dng c vi dung dch AgNO3/NH3 to ra kt ta l A. 2. B. 4. C. 3. D. 5.

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Cu 75: Co th phn bit 3 lo mt nhan cha: HCOOH ; CH3COOH ; C2H5OH vi hoa cht nao di y ? A. dd AgNO3/NH3. B. NaOH. C. Na. D. Cu(OH)2/OH-. Cu 76: Chi dung thuc th nao di y co th phn bit 4 lo mt nhan cha : fomon ; axit fomic ; axit axetic ; ancol etylic ? A. dd AgNO3/NH3. B. CuO. C. Cu(OH)2/OH-. D. NaOH. Cu 77: Chi dung thuc th nao di y co th phn bit 4 lo mt nhan cha : etylen glicol ; axit fomic ; fomon ; ancol etylic ? A. dd AgNO3/NH3 B. CuO. C. Cu(OH)2/OH-. D. NaOH. Cu 78: Chi dung quy tim va nc brom co th phn bit c nhng cht no sau y ? A. axit fomic ; axit axetic ; axit acrylic ; axit propionic. B. Axit axetic; axit acrylic; anilin; toluen; axit fomic. C. Ancol etylic; ancol metylic; axit axetic; axit propionic. D. Ancol etylic; ancol metylic ; phenol ; anilin. Cu 79: phn bit 3 mu ha cht ring bit : phenol, axit acrylic, axit axetic bng mt thuc th, ngi ta dng thuc th A. dung dch Na2CO3. B. CaCO3. C. dung dch Br2. D. dung dch AgNO3/NH3. Cu 80: phn bit axit propionic v axit acrylic ta dng A. dung dch Na2CO3. B. dung dch Br2. C. dung dch C2H5OH. D. dung dch NaOH. Cu 81: C th phn bit CH3CHO v C2H5OH bng phn ng vi A. Na. B. Cu(OH)2/NaOH. C. AgNO3/NH3. D. Tt c u ng. Cu 82: phn bit 3 dung dch ring bit : axit axetic, axit acrylic, axit fomic ngi ta dng theo th t cc thuc th sau A. dung dch Br2/CCl4. B. dung dch Br2/H2O. C. dung dch Na2CO3. D. dung dch AgNO3/NH3 d. Cu 83: phn bit HCOOH v CH3COOH ta dng A. Na. B. AgNO3/NH3. C. CaCO3. D. NaOH. Cu 84: Trng gng hon ton hp cht hu c X bng AgNO3/NH3 thu c hn hp sn phm ch gm cc cht v c. X c cu to A. HCHO. B. HCOONH4. C. HCOOH. D. Tt c u ng. Cu 85: C th phn bit HCOOCH3 v CH3COOH bng A. AgNO3/NH3 B. CaCO3. C. Na. D. Tt c u ng. Cu 86: Cht to c kt ta gch khi un nng vi Cu(OH)2 l A. HCHO. B. HCOOCH3. C. HCOOH. D. Tt c u ng. Cu 87: Ch dng 1 ha cht no sau y phn bit cc dung dch : ancol etylic, glixerol, fomalin ? A. Cu(OH)2 , toC. B. Na. C. AgNO3 / NH3. D. A, B, C u ng. Cu 88: Hiro hoa hoan toan 2,9 gam mt anehit A c 3,1 gam ancol. A co cng thc phn t la A. CH2O. B. C2H4O. C. C3H6O. D. C2H2O2. Cu 89: Th tch H2 (0oC v 2 atm) va tc dng vi 11,2 gam anehit acrylic l A. 4,48 lt. B. 2,24 lt. C. 0,448 lt. D. 0,336 lt. Cu 90: Cho 14,6 gam hn hp 2 anehit n chc, no lin tip tc dng ht vi H2 to 15,2 gam hn hp 2 ancol. a. Tng s mol 2 ancol l A. 0,2 mol. B. 0,4 mol. C. 0,3 mol. D. 0,5 mol. b. Khi lng anehit c KLPT ln hn l A. 6 gam. B. 10,44 gam. C. 5,8 gam. D. 8,8 gam. Cu 91: Cho 7 gam cht A c CTPT C4H6O tc dng vi H2 d c xc tc to thnh 5,92 gam ancol isobutylic. a. Tn ca A l A. 2-metyl propenal. B. 2-metylpropanal. C. but-2-en-1-ol. D. but-2-en-1-al. b. Hiu sut ca phn ng l A. 85%. B. 75%. C. 60%. D. 80%. Cu 92: Oxi ha 1,76 gam mt anehit n chc c 2,4 gam mt axit tng ng. Anehit l A. anehit acrylic. B. anehit axetic. C. anehit propionic. D. anehit fomic.

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Cu 93: Oxi hoa 17,4 gam mt anehit n chc c 16,65 gam axit tng ng (H = 75%). Anehit co cng thc phn t la A. CH2O. B. C2H4O. C. C3H6O. D. C3H4O. Cu 94: t chy a mol mt anehit A thu c a mol CO2. Anehit ny c th l A. CH3CHO. B. HCHO. C. C2H5CHO. D. A, B, C u ng. Cu 95: t chy hon ton 1,46 gam hn hp 2 anehit no, n chc ng ng k tip thu c 1,568 lt CO2 (ktc). a. CTPT ca 2 anehit l A. CH3CHO v C2H5CHO. B. HCHO v CH3CHO. C. C2H5CHO v C3H7CHO. D. Kt qu khc. b. Khi lng gam ca mi anehit l A. 0,539 v 0,921. B. 0,88 v 0,58. C. 0,44 v 1,01. D. 0,66 v 0,8. Cu 96: t chay hoan toan mt anehit n chc no, mch h A cn 17,92 lit O2 (ktc). Hp thu ht san phm chay vao nc vi trong c 40 gam kt tua va dung dich X. un nong dung dich X lai co 10 gam kt tua na. Cng thc phn t A la A. CH2O. B. C2H4O. C. C3H6O. D. C4H8O. Cu 97: X, Y, Z, T la 4 anehit no h n chc ng ng lin tip, trong o MT = 2,4MX. t chay hoan toan 0,1 mol Z ri hp thu ht san phm chay vao binh ng dung dich Ca(OH) 2 d thy khi lng dung dich tng hay giam bao nhiu gam? A. Tng 18,6 gam. B. Tng 13,2 gam. C. Giam 11,4 gam. D. Giam 30 gam. Cu 98: t chay hoan toan mt lng aehit A cn va u 2,52 lit O2 (ktc), c 4,4 gam CO2 va 1,35 gam H2O. A co cng thc phn t la A. C3H4O. B. C4H6O. C. C4H6O2. D. C8H12O. Cu 99: t chy hon ton 1 anehit A mch h, no thu c CO2 v H2O theo t l n A : n C O2 : n H2O = 1 : 3 : 2 . Vy A l A. CH3CH2CHO. B. OHCCH2CHO. C. HOCCH2CH2CHO. D. CH3CH2CH2CH2CHO. Cu 100: Cho 1,97 gam dung dch fomalin tc dng vi dung dch AgNO3/NH3 d thu c 10,8 gam Ag. Nng % ca anehit fomic trong fomalin l A. 49%. B. 40%. C. 50%. D. 38,07%. Cu 101: Hp cht A cha 1 loi nhm chc v phn t ch cha cc nguyn t C, H, O trong oxi chim 37,21% v khi lng, 1 mol A trng gng hon ton cho 4 mol Ag. Vy A l A. C2H4(CHO)2. B. HCHO. C. HOCCH2CHO. D. CH3CHO. Cu 102: Cho 10,4 gam hn hp gm metanal v etanal tc dng vi mt lng va d AgNO 3/NH3 thu c 108 gam Ag. Khi lng metanal trong hn hp l A. 4,4 gam. B. 3 gam. C. 6 gam. D. 8,8 gam. o Cu 103: Cho bay hi ht 5,8 gam mt hp cht hu c X thu c 4,48 lt hi X 109,2 C v 0,7 atm. Mt khc khi cho 5,8 gam X phn ng ca AgNO3/NH3 d to 43,2 gam Ag. CTPT ca X l A. C2H2O2. B. C3H4O2. C. CH2O. D. C2H4O2. Cu 104: Cho 5,8 gam anehit A tc dng ht vi mt lng d AgNO3/NH3 thu c 43,2 gam Ag. Tm CTPT ca A A. CH3CHO. B. CH2=CHCHO. C. OHCCHO. D. HCHO. Cu 105: Cho 8,7 gam anehit X tac dung hoan toan vi lng dung dich AgNO 3/NH3 (d) c 64,8 gam Ag. X co cng thc phn t la A. CH2O. B. C2H4O. C. C2H2O2. D. C3H4O. Cu 106: 8,6 gam anehit mach khng nhanh A tac dung vi lng (d) dung dich AgNO3/NH3 tao 43,2 gam Ag. A co cng thc phn t la A. CH2O. B. C3H4O. C. C4H8O. D.C4H6O2. Cu 107: X la hn hp gm 2 anehit ng ng lin tip. Cho 0,1 mol X tac dung vi lng d dung dich AgNO 3/NH3 c 25,92 gam bac. % s mol anehit co s cacbon nho hn trong X la A. 20%. B. 40%. C. 60%. D. 75%. Cu 108: Cho 0,1 mol mt anehit X tac dung ht vi dung dich AgNO3/NH3 (d) c 43,2 gam Ag. Hiro hoa hoan toan X c Y. Bit 0,1 mol Y tac dung va u vi Na va u c 12 gam rn. X co cng thc phn t la

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A. CH2O. B. C2H2O2. C. C4H6O. D. C3H4O2. Cu 109: X la hn hp 2 anehit n chc. Chia 0,12 mol X thanh hai phn bng nhau : - t chay ht phn 1 c 6,16 gam CO2 va 1,8 gam H2O. - Cho phn 2 tac dung vi lng d dung dich AgNO3/NH3 c 17,28 gam bac. X gm 2 anehit co cng thc phn t la A. CH2O va C2H4O. B. CH2O va C3H6O. C. CH2O va C3H4O. D. CH2O va C4H6O. Cu 110: Oxi ha 48 gam ancol etylic bng K2Cr2O7 trong H2SO4 c, tch ly sn phm hu c ra ngay khi mi trng v dn vo dung dch AgNO3/NH3 d thy c 123,8 gam Ag. Hiu sut ca phn ng oxi ha l A. 72,46 %. B. 54,93 %. C. 56,32 %. D. Kt qu khc. Cu 111: Dn m gam hi ancol etylic qua ng ng CuO d un nong. Ngng tu phn hi thoat ra c hn hp X gm anehit, ancol etylic va H2O. Bit lng X tac dung vi Na (d) giai phong 3,36 lit H2 ( ktc), con 1/2 lng X con lai tac dung vi d dung dich AgNO3/NH3 tao c 25,92 gam Ag. a. Gia tri m la A. 13,8 gam B. 27,6 gam C. 16,1 gam D. 6,9 gam b. Hiu sut phn ng oxi ho ancol etylic l A. 20%. B. 40%. C. 60%. D. 75%. Cu 112: Cho m gam ancol n chc no (h) X qua ng ng CuO (d) nung nong. Sau khi phan ng hoan toan thy khi lng cht rn trong ng giam 0,32 gam. Hn hp hi thu c (gm hi anehit va hi nc) co ti khi so vi H 2 la 19. Gia tri m la A. 1,2 gam. B. 1,16 gam. C. 0,92 gam. D.0,64 gam. Cu 113: X la hn hp 2 ancol n chc ng ng lin tip. Cho 0,3 mol X tac dung hoan toan vi CuO un nong c hn hp Y gm 2 anehit. Cho Y tac dung vi lng dung dich AgNO3/NH3 c 86,4 gam Ag. X gm A. CH3OH va C2H5OH. B. C3H7OH va C4H9OH. C. C2H5OH v C3H7OH. D. C3H5OH va C4H7OH. Cu 114: Dn 4 gam hi ancol n chc A qua ng ng CuO, nung nong. Ngng tu phn hi thoat ra c hn hp X. Cho X tac dung vi lng d dung dich AgNO3/NH3 c 43,2 gam bac. A la A. ancol metylic. B. ancol etylic. C. ancol anlylic. D. ancol benzylic. Cu 115: X la hn hp gm mt ancol n chc no, mch h A va mt anehit no, mch h n chc B (A va B co cung s cacbon). t chay hoan toan 13,4 gam X c 0,6 mol CO2 va 0,7 mol H2O. S nguyn t C trong A, B u la A. 1. B. 2. C. 3. D. 4. Cu 116: Cho hn hp gm 0,1 mol HCHO v 0,1 mol HCOOH tc dng vi lng d Ag2O (hoc AgNO3) trong dung dch NH3, un nng. Sau khi cc phn ng xy ra hon ton, khi lng Ag to thnh l A. 43,2 gam. B. 10,8 gam. C. 64,8 gam. D. 21,6 gam. Cu 117: Cho 0,1 mol hn hp X gm hai anehit no, n chc, mch h, k tip nhau trong dy ng ng tc dng vi lng d dung dch AgNO3 trong NH3, un nng thu c 32,4 gam Ag. Hai anehit trong X l A. HCHO v C2H5CHO. B. HCHO v CH3CHO. C. C2H3CHO v C3H5CHO. D. CH3CHO v C2H5CHO. Cu 118: Hiro ho hon ton hn hp M gm hai anehit X v Y no, n chc, mch h, k tip nhau trong dy ng ng (MX < My), thu c hn hp hai ancol c khi lng ln hn khi lng M l 1 gam. t chy hon ton M thu c 30,8 gam CO2. Cng thc v phn trm khi lng ca X ln lt l A. HCHO v 50,56%. B. CH3CHO v 67,16%. C. CH3CHO v 49,44%. D. HCHO v 32,44%. Cu 119: Cho 0,1 mol anehit X tc dng vi lng d AgNO3 (hoc Ag2O) trong dung dch NH3, un nng thu c 43,2 gam Ag. Hiro ho X thu c Y, bit 0,1 mol Y phn ng va vi 4,6 gam Na. Cng thc cu to thu gn ca X l A. HCHO. B. OHCCHO. C. CH3CHO. D. CH3CH(OH)CHO. Cu 120: Hai hp cht hu c X v Y l ng ng k tip, u tc dng vi Na v c phn ng trng bc. Bit phn trm khi lng oxi trong X, Y ln lt l 53,33% v 43,24%. Cng thc cu to ca X v Y tng ng l A. HOCH2CHO v HOCH2CH2CHO. B. HOCH2CH2CHO v HOCH2CH2CH2CHO. C. HCOOCH3 v HCOOCH2CH3. D. HOCH(CH3)CHO v HOOCCH2CHO.

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Cu 121: Hp cht hu c X tc dng c vi dung dch NaOH un nng v vi dung dch AgNO3 trong NH3. Th tch ca 3,7 gam hi cht X bng th tch ca 1,6 gam kh O2 (cng iu kin v nhit v p sut). Khi t chy hon ton 1 gam X th th tch kh CO2 thu c vt qu 0,7 lt ( ktc). Cng thc cu to ca X l A. HCOOC2H5. B. CH3COOCH3. C. HOOCCHO. D. OHCCH2CH2OH. Cu 122: Hiro ho hon ton m gam hn hp X gm hai anehit no, n chc, mch h, k tip nhau trong dy ng ng thu c (m + 1) gam hn hp hai ancol. Mt khc, khi t chy hon ton cng m gam X th cn va 17,92 lt kh O2 ( ktc). Gi tr ca m l A. 10,5. B. 8,8. C. 24,8. D. 17,8. Cu 123: Cho m gam hn hp X gm hai ru (ancol) no, n chc, k tip nhau trong dy ng ng tc dng vi CuO (d) nung nng, thu c mt hn hp rn Z v mt hn hp hi Y (c t khi hi so vi H2 l 13,75). Cho ton b Y phn ng vi mt lng d Ag2O (hoc AgNO3) trong dung dch NH3 un nng, sinh ra 64,8 gam Ag. Gi tr ca m l A. 7,8. B. 8,8. C. 7,4. D. 9,2. Cu 124: Cho 3,6 gam anehit n chc X phn ng hon ton vi mt lng d Ag2O (hoc AgNO3) trong dung dch NH3 un nng, thu c m gam Ag. Ho tan hon ton m gam Ag bng dung dch HNO3 c, sinh ra 2,24 lt NO2 (sn phm kh duy nht, ktc). Cng thc ca X l A. C3H7CHO. B. HCHO. C. C4H9CHO. D. C2H5CHO. Cu 125: Oxi ho 1,2 gam CH3OH bng CuO nung nng, sau mt thi gian thu c hn hp sn phm X (gm HCHO, H2O v CH3OH d). Cho ton b X tc dng vi lng d Ag2O (hoc AgNO3) trong dung dch NH3, c 12,96 gam Ag. Hiu sut ca phn ng oxi ho CH3OH l A. 76,6%. B. 80,0%. C. 65,5%. D. 70,4%. Cu 126: Cho 0,25 mol mt anehit mch h X phn ng vi lng d dung dch AgNO3 trong NH3, thu c 54 gam Ag. Mt khc, khi cho X phn ng vi H2 d (xc tc Ni, to) th 0,125 mol X phn ng ht vi 0,25 mol H2. Cht X c cng thc ng vi cng thc chung l A. CnH2n-3CHO (n 2). B. CnH2n-1CHO (n 2). C. CnH2n+1CHO (n 0). D. CnH2n(CHO)2 (n 0). Cu 127: Cho hn hp kh X gm HCHO v H2 i qua ng s ng bt Ni nung nng. Sau khi phn ng xy ra hon ton, thu c hn hp kh Y gm hai cht hu c. t chy ht Y th thu c 11,7 gam H 2O v 7,84 lt kh CO2 ( ktc). Phn trm theo th tch ca H2 trong X l A. 35,00%. B. 65,00%. C. 53,85%. D. 46,15%. Cu 128: Hn hp X gm hai ancol no, n chc, mch h, k tip nhau trong dy ng ng. Oxi ho hon ton 0,2 mol hn hp X c khi lng m gam bng CuO nhit thch hp, thu c hn hp sn phm hu c Y. Cho Y tc dng vi mt lng d dung dch AgNO3 trong NH3, thu c 54 gam Ag. Gi tr ca m l A. 13,5. B. 8,1. C. 8,5. D. 15,3. Cu 129: 1,72 gam hn hp anehit acrylic v anehit axetic tham gia phn ng cng va 1,12 lt H 2 (ktc). Cho thm 0,696 gam anehit B l ng ng ca anehit fomic vo 1,72 gam hn hp 2 anehit trn ri cho hn hp thu c tham gia phn ng trng bc hon ton c 10,152 gam Ag. Cng thc cu to ca B l A. CH3CH2CHO. B. C4H9CHO. C. CH3CH(CH3)CHO. D. CH3CH2CH2CHO. Cu 130*: 17,7 gam hn hp X gm 2 anehit n chc phn ng hon ton vi dung dch AgNO3 trong NH3 (dng d) c 1,95 mol Ag v dung dch Y. Ton b Y tc dng vi dung dch HCl d c 0,45 mol CO2. Cc cht trong hn hp X l A. C2H3CHO v HCHO. B. C2H5CHO v HCHO. C. CH3CHO v HCHO. D. C2H5CHO v CH3CHO. Cu 131: A la axit cacboxylic n chc cha no (1 ni i C=C). A tac dung vi brom cho san phm cha 65,04% brom (theo khi lng). Vy A co cng thc phn t la A. C3H4O2. B. C4H6O2. C. C5H8O2. D. C5H6O2. Cu 132: Mun trung ha 6,72 gam mt axit hu c A cn dng 200 gam dung dch NaOH 2,24%. A l A. CH3COOH. B. CH3CH2COOH. C. HCOOH. D. CH2=CHCOOH. Cu 133: trung hoa 40 ml gim n cn 25 ml dung dich NaOH 1M. Bit khi lng ring cua gim la 1 g/ml. Vy mu gim n nay co nng la A. 3,5%. B. 3,75%. C. 4%. D. 5%.

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Cu 134: Trung hoa 9 gam axit cacbonxylic A bng NaOH va u c can dung dich c 13,4 gam mui khan. A co cng thc phn t la A. C2H4O2. B. C2H2O4. C. C3H4O2. D. C4H6O4. Cu 135: Trung hoa 2,7 gam axit cacboxylic A cn va u 60 ml dung dich NaOH 1M. A co cng thc phn t la A. C2H4O2. B. C3H4O2. C. C4H6O4. D. C2H2O4. Cu 136: Trung ha hon ton 1,8 gam mt axit hu c n chc bng dung dch NaOH va ri c cn dung dch sau phn ng c 2,46 gam mui khan. Axit l A. HCOOH. B. CH2=CHCOOH. C. CH3CH2COOH. D. CH3COOH. Cu 137: 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. Cng thc phn t ca X l A. C2H5COOH. B. CH3COOH. C. HCOOH. D. C3H7COOH. Cu 138: A v B l 2 axit cacboxylic n chc. Trn 1,2 gam A vi 5,18 gam B c hn hp X. trung ha ht X cn 90 ml dung dch NaOH 1M. A, B ln lt l A. Axit propionic, axit axetic. B. axit axetic, axit propionic. C. Axit acrylic, axit propionic. D. Axit axetic, axit acrylic. Cu 139: Cho 2,46 gam hn hp gm HCOOH, CH3COOH, C6H5OH tc dng va vi 400 ml dung dch NaOH 1M. Tng khi lng mui thu c sau phn ng l A. 3,54 gam. B. 4,46 gam. C. 5,32 gam. D. 11,26 gam. Cu 140: Cho 5,76 gam axit hu c X n chc, mch h tc dng ht vi CaCO3 thu c 7,28 gam mui ca axit hu c. Cng thc cu to thu gn ca X l A. CH2=CHCOOH. B. CH3COOH. C. HCCCOOH. D. CH3CH2COOH. Cu 141: Cho 0,1 mol axit hu c X tc dng vi 11,5 gam hn hp Na v K thu c 21,7 gam cht rn v thy thot ra 2,24 lt kh H2 (ktc). Cng thc cu to ca X l A. (COOH)2. B. CH3COOH. C. CH2(COOH)2. D. CH2=CHCOOH. Cu 142: Cho 16,6 gam hn hp gm HCOOH, CH3COOH tc dng ht vi Mg thu c 3,36 lt H2 (ktc). Khi lng CH3COOH l A. 12 gam. B. 9 gam. C. 6 gam. D. 4,6 gam. Cu 143: X la hn hp gm HCOOH va CH 3COOH (ti l mol 1:1). Ly 21,2 gam X tac dung vi 23 gam C 2H5OH (xuc tac H2SO4 c, un nong) thu c m gam hn hp este (hiu sut este hoa u at 80%). Gia tri m la A. 40,48 gam. B. 23,4 gam. C. 48,8 gam. D. 25,92 gam. Cu 144: un nong 6 gam CH3COOH vi 9,2 gam C2H5OH (co H2SO4 c lam xuc tac) n khi phan ng at ti trang thai cn cn bng thi c 5,5 gam este. Hiu sut phan ng este hoa la A. 55%. B. 62,5%. C. 75%. D. 80%. Cu 145: Cho 0,3 mol axit X n chc trn vi 0,25 mol ancol etylic em thc hin phn ng este ha thu c thu c 18 gam este. Tch ly lng ancol v axit d cho tc dng vi Na thy thot ra 2,128 lt H2. Vy cng thc ca axit v hiu sut phn ng este ha l A. CH3COOH, H% = 68%. B. CH2=CHCOOH, H%= 78%. C. CH2=CHCOOH, H% = 72%. D. CH3COOH, H% = 72%. Cu 146: Oxi ho anehit OHCCH2CH2CHO trong iu kin thch hp thu c hp cht hu c X. un nng hn hp gm 1 mol X v 1 mol ancol metylic vi xc tc H2SO4 c thu c 2 este Z v Q (MZ < MQ) vi t l khi lng mZ : mQ = 1,81. Bit ch c 72% ancol chuyn thnh este. S mol Z v Q ln lt l A. 0,36 v 0,18. B. 0,48 v 0,12. C. 0,24 v 0,24. D. 0,12 v 0,24. Cu 147: t chy hon ton 2,22 gam mt axit hu c no A thu c 1,62 gam H2O. A l A. C3H7COOH. B. C2H5COOH. C. HCOOH. D. CH3COOH. Cu 148: t chay hoan toan 0,1 mol axit n chc cn V lit O2 ktc, thu c 0,3 mol CO2 va 0,2 mol H2O. Gia tri V la A. 6,72 lit. B. 8,96 lit. C. 4,48 lit. D. 5,6 lit. Cu 149: t chay hoan toan mt axit A thu c 0,2 mol CO2 va 0,15 mol H2O. A co cng thc phn t la A. C3H4O4. B. C4H8O2. C. C4H6O4. D. C5H8O4.

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Cu 150: t chy hon ton 4,38 gam mt axit E no, mch thng thu c 4,032 lt CO 2 (kc) v 2,7 gam H2O. CTCT ca E l A. CH3COOH. B. C17H35COOH. C. HOOC(CH2)4COOH. D. CH2=C(CH3)COOH. Cu 151: t chay hoan toan 0,1 mol axit cacboxylic A thu c cha n 8 gam hn hp CO2 va H2O. A la A. axit fomic. B. axit axetic. C. axit acrylic. D. axit oxalic. Cu 152: Z l mt axit hu c. t chy 0,1 mol Z cn 6,72 lt O2 (ktc). CTCT ca Z l A. CH3COOH. B. CH2=CHCOOH. C. HCOOH. D. Kt qu khc. Cu 153: t chy ht 1 th tch hi axit hu c A c 3 th tch hn hp CO2 v hi nc khi o cng iu kin. CTPT ca A l A. HCOOH. B. CH3COOH. C. HOOCCOOH. D. HOOCCH2COOH. Cu 154: t chy hon ton 0,44 gam mt axit hu c, sn phm chy cho hp th hon ton vo bnh 1 ng P 2O5, bnh 2 ng dung dch KOH. Sau th nghim thy khi lng bnh 1 tng 0,36 gam v bnh 2 tng 0,88 gam. CTPT ca axit l A. C4H8O2. B. C5H10O2. C. C2H6O2. D. C2H4O2. Cu 155: t chy ht 10ml th tch hi mt hp cht hu c A cn dng 30 ml O2, sn phm thu c ch gm CO2 v H2O c th tch bng nhau v u bng th tch O2 phn ng. CTPT ca A l A. C2H4O2. B. C3H6O3. C. C3H6O2. D. C4H8O2. Cu 156: X la hn hp 2 axit cacboxylic no, h, phn t mi axit cha khng qua 2 nhom -COOH. t chay hoan toan 9,8 gam X c 11 gam CO2 va 3,6 gam H2O. X gm A. HCOOH va CH3COOH. B. HCOOH va HOOCCH2COOH. C. HCOOH va HOOCCOOH. D. CH3COOH va HOOCCH2COOH. Cu 157: Cc sn phm thu c khi t chy hon ton 3 gam axit hu c X c dn ln lt qua bnh 1 ng H 2SO4 c v bnh 2 ng dung dch NaOH. Sau th nghim thy khi lng bnh 1 tng 1,8 gam v khi lng bnh 2 tng 4,4 gam. CTCT ca A l A. HCOOH. B. C2H5COOH. C. CH3COOH. D. A hoc B hoc C. o Cu 158: Oxi hoa 0,125 mol ancol n chc A bng 0,05 mol O2 (xt, t ) c 5,6 gam hn hp X gm axit cacboxylic ; anehit ; ancol d va nc. A co cng thc phn t la A. CH4O. B. C2H6O. C. C3H6O. D. C3H8O. Cu 159: Hn hp X gm axit Y n chc v axit Z hai chc (Y, Z c cng s nguyn t cacbon). Chia X thnh hai phn bng nhau. Cho phn mt tc dng ht vi Na, sinh ra 4,48 lt kh H2 ( ktc). t chy hon ton phn hai, sinh 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. HOOCCOOH v 42,86%. B. HOOCCOOH v 60,00%. C. HOOCCH2COOH v 70,87%. D. HOOCCH2COOH v 54,88%. Cu 160: Cht A c ngun gc t thc vt v thng gp trong i sng (cha C, H, O), mch h. Ly cng s mol ca A cho phn ng ht vi Na2CO3 hay vi Na th thu c s mol CO2 bng 3/4 s mol H2. Cht A l A. axit malic : HOOCCH(OH)CH2COOH. B. axit xitric : HOOCCH2C(OH)(COOH)CH2COOH. C. axit lauric : CH3(CH2)10COOH. D. axit tactaric : HOOCCH(OH)CH(OH)COOH. Cu 161: Khi cho a mol mt hp cht hu c X (cha C, H, O) phn ng hon ton vi Na hoc vi NaHCO 3 th u sinh ra a mol kh. Cht X l A. ancol o-hiroxibenzylic. B. axit aipic. C. axit 3-hiroxipropanoic. D. etylen glicol. Cu 162: Chia 0,3 mol axit cacobxylic A thanh hai phn bng nhau. - t chay phn 1 c 19,8 gam CO2. - Cho phn 2 tac dung hoan toan vi 0,2 mol NaOH, thy sau phan ng khng con NaOH. Vy A co cng thc phn t la A. C3H6O2. B. C3H4O2. C. C3H4O4. D. C6H8O4.

11

Cu 163: Cho 10 gam hn hp X gm HCHO va HCOOH tac dung vi lng (d) dung dich AgNO 3/NH3 c 99,36 gam bac. % khi lng HCHO trong hn hp X la A. 54%. B. 69%. C. 64,28%. D. 46%. Cu 164: trung hoa a mol axit cacboxylic A cn 2a mol NaOH. t chay hoan toan a mol A thu c 3a mol CO2. A co cng thc phn t la A. C3H4O2. B. C3H6O2. C. C6H10O4. D. C3H4O4. Cu 165: t chay hoan toan 3,12 gam axit cacboxylic A c 3,96 gam CO2. Trung hoa cung lng axit nay cn 30 ml dung dich NaOH 2M. A co cng thc phn t la A. C2H4O2. B. C4H6O2. C. C3H4O2. D. C3H4O4. Cu 166: Hn hp X gm 2 axit no A1 v A2. t chy hon ton 0,3 mol X thu c 11,2 lt CO2 (kc). trung ha 0,3 mol X cn 500 ml dung dch NaOH 1M. CTCT ca 2 axit l A. HCOOH v C2H5COOH. B. CH3COOH v C2H5COOH. C. HCOOH v HOOCCOOH. D. CH3COOH v HOOCCH2COOH. Cu 167: Trung ha a mol axit hu c A cn 2a mol NaOH. t chy ht a mol A c 2a mol CO2. A l A. CH3COOH. B. HOOCCOOH. C. axit n chc no. D. axit n chc khng no. Cu 168: Hp cht hu c E mch h c CTPT C3H6O3 c nhiu trong sa chua. E c th tc dng vi Na v Na2CO3, cn khi tc dng vi CuO nung nng th to ra hp cht hu c khng tham gia phn ng trng gng. CTCT ca E l A. CH3COOCH2OH. B. CH3CH(OH)COOH. C. HOCH2COOCH3. D. HOCH2CH2COOH. Cu 169: t chy hon ton 0,1 mol cht X l mui Na ca mt axit hu c thu c 0,15 mol CO 2, hi H2O v Na2CO3. CTCT ca X l A. C3H7COONa. B. CH3COONa. C. CH3COONa. D. HCOONa. Cu 170: Hn hp X gm 0,01 mol HCOONa v a mol mui natri ca hai axit no n chc mch h l ng ng lin tip. t chy hn hp X v cho sn phm chy (CO 2, hi nc) ln lt qua bnh 1 ng H2SO4 c bnh 2 ng KOH thy khi lng bnh 2 tng nhiu hn bnh mt l 3,51 gam. Phn cht rn Y cn li sau khi t l Na2CO3 cn nng 2,65 gam. Cng thc phn t ca hai mui natri l A. C2H5COONa v C3H7COONa. B. C3H7COONa v C4H9COONa. C. CH3COONa v C2H5COONa. D. CH3COONa v C3H7COONa. Cu 171: Khi lng axit axetic thu c khi ln men 1 lit ancol etylic 8 o la bao nhiu ? Cho d = 0,8 g/ml va hiu sut phan ng at 92%. A. 76,8 gam. B. 90,8 gam. C. 73,6 gam. D. 58,88 gam. Cu 172: Thc hin phn ng oxi ha m gam ancol etylic nguyn cht thnh axit axetic (hiu sut phn ng t 25%) thu c hn hp Y, cho Y tc dng vi Na d thu c 5,6 lt H2 (ktc). Gi tr ca m l A. 18,4 gam. B. 9,2 gam. C. 23 gam. D. 4,6 gam. Mg,ete A CO2 + HCl C . Cu 174: Cho s sau : C2H5Br B C c cng thc l A. CH3COOH. B. CH3CH2COOH. C. CH3CH2OH. D. CH3CH2CH2COOH. (COOH) B D C2H5OH Cu 175: Cho s chuyn ho sau: HCOONa A 2 Cc cht A, B, D c th l A. H2 ; C4H6 ; C2H4(OH)2. B. H2 ; C2H4 ; C2H4(OH)2. C. CH4 ; C2H2 ; (CHO)2. D. C2H6 ; C2H4(OH)2. Cu 176 : Cho 19,8 gam mt anehit n chc A phan ng hoan toan vi dung dich AgNO3/NH3 (d). Lng Ag sinh ra phan ng ht vi dung dich HNO3 loang c 6,72 lit NO (ktc). A co cng thc phn t la A. C2H4O. B. C3H6O. C. C3H4O. D. C4H8O. Cu 177: Cho 10,90 gam hn hp gm axit acrylic v axit propionic phn ng hon ton vi Na thot ra 1,68 lt kh (ktc). Nu cho hn hp trn tham gia phn ng cng H2 hon ton th khi lng sn phm cui cng l A. 11,1 gam. B. 7,4 gam. C. 11,2 gam. D. 11,0 gam.

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Cu 178: Cho 3,15 gam hn hp X gm axit axetic, axit acrylic, axit propionic va lm mt mu hon ton dung dch cha 3,2 gam brom. trung han ton 3,15 gam hn hp X cn 90 ml dd NaOH 0,5M. Thnh phn phn trm khi lng ca axit axetic trong hn hp X l A. 35,24%. B. 45,71%. C. 19,05%. D. 23,49%. Cu 179: Ha tan 26,8 gam hn hp hai axit cacboxylic no, n chc, mch h vo nc c dung dch X. Chia X thnh hai phn bng nhau. Cho phn 1 phn ng hon ton vi dung dch AgNO 3/NH3 d thu c 21,6 gam bc kim loi. trung ha hon ton phn 2 cn 200,0 ml dung dch NaOH 1,0M. Cng thc ca hai axit l A. HCOOH, C3H7COOH. B. CH3COOH, C2H5COOH. C. CH3COOH, C3H7COOH. D. HCOOH, C2H5COOH. Cu 180: Cho 13,4 gam hn hp X gm hai axit no, n chc, mch h, k tip nhau trong cng dy ng ng tc dng vi Na d, thu c 17,8 gam mui. Khi lng ca axit c s nguyn t cacbon t hn c trong X l A. 3,0 gam. B. 4,6 gam. C. 7,4 gam. D. 6,0 gam. Cu 181.. t chy hon ton 0,1 mol mt axit cacboxylic n chc, cn va V lt O2 ( ktc), thu c 0,3 mol CO2 v 0,2 mol H2O. Gi tr ca V l A. 6,72 B.4,48 C.8,96 D.11,2 Cu 182 .. t chy hon ton 7,2gam mt axit cacboxylic trong phn t c hai lin kt i cn dng 6,72 lit O2 (ktc), sn phm chy cho qua bnh ng nc vi trong d thy c 30gam kt ta. Cng thc phn t ca axit l: A. C3H4O4 B. C3H4O2 C. C4H6O2 D. C4H6O4 Cu 183. t chy hon ton 0,1 mol hn hp 2 axit cacboxylic l ng ng k tip thu c 3,36 lt CO2 (ktc) v 2,7 gam nc. Cng thc phn t ca chng l A. CH3COOH; C2H5COOH B. C2H5COOH; C3H7COOH C. HCOOH; CH3COOH D. Khng xc nh Cu 184.t chy hon ton 1,76 (g) 1 axit hu c X mch thng c 1,792 lt kh CO2 (ktc) v 1,44 gam H2O . Cng thc cu to ca X l ? A. CH3CH2CH2COOH B. C2H5COOH C. CH3CH = CHCOOH D. HOOCCH2COOH Cu 185. Cho 1,0 gam axit axetic vo ng nghim th nht v cho 1,0 gam axit fomic vo ng nghim th hai, sau cho vo c hai ng nghim trn mt lng d bt CaCO3 . Khi p xy ra hon ton th tch CO2 thu c cng k A. t c hai ng u ln hn 22,4 lt (ktc). B. t ng th nht nhiu hn t ng th hai. C. t hai ng nghim bng nhau. D. t ng th hai nhiu hn t ng th nht Cu 186. Hn hp 2 axit n chc ng ng k tip tc dng vi NaOH d. Lng mui sinh ra em tin hnh phn ng vi ti xt hon ton, c hn hp kh c t khi so vi H2 l: 6,25. Hai axit c % s mol ln lt l: A. 40% v 60% B. 30% v 70% C. 20% v 80% D. 25% v 75% Cu 187. Hn hp A gm 2 cht k tip nhau trong dy ng ng ca axit fomic. t chy ht m gam hn hp A ri cho sn phm chy hp th ht vo lng d dung dch Ca(OH)2 th thu c 23g kt ta. Cn nu cho m gam hn hp A tc dng ht vi NaHCO3 thu c 2,016 lt CO2 (ktc). Khi lng (gam) mi axt trong hn hp A l: A. 2,4; 3,7 B. 2,96; 3 C. 1,84; 3 D. 2,3; 2,96 Cu 188. t chy ht b mol mt axit hu c hai ln axit cn 0,5b mol oxi. Axit ny l: A. Axit no B. Axit cha no mt ni C. Axit D . Khng xc nh c Cu 189. t chy hon ton m gam 1 axit hu c n chc X, ri dn sn phm vo bnh ng lng d dung dch Ca(OH)2 , khi lng bnh tng ln p gam v c t gam kt ta. Bit rng. P = 0,62t v t =

m+ p .Hy xc nh CTPT X. 13 / 15

A.C3H7COOH B. CH3COOH C. HCOOH D. C2H5COOH Cu 190.t chy hon ton 1 axitcacboxylic thy s mol O2 p bng s mol CO2 v bng s mol H2O sinh ra. Axit l: A. HCOOH B. CH3COOH C. (COOH)2 D. C2H5COOH Cu 191.Hn hp X gm hai axit hu c no. t chy 0,3 mol hn hp X thu c 11,2 lt CO 2 (ktc). Nu trung ha 0,3 mol hn hp X cn 500ml dung dch NaOH 1M. Cng thc cu to ca hai axit l: A. CH3COOH; C2H5COOH B. HCOOH; (C OOH)2 C. CH3COOH; C3H7COOH D.CH3COOH;(COOH)2. Cu 192. Cho cc axit HCOOH(1); C2H5COOH(2); CH3COOH(3); (CH3)2CHCOOH(4). Dy cc axit sp xp theo th t tnh PH tng dn t tri qua phi l A. 1; 3; 2; 4 B. 1; 2; 3; 4 C. 4; 2; 3; 1 D.3; 2; 4; 1

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Cu193. Mt hh x gm 2 axit cacboxylic no A , B c s nguyn t C hn km nhau 1 .Nu trung ha 14,64g X bng 1 lng NaOH va thu c 20,36g hh Y gm 2 mui .Nu lm bay hi 14,4g X th chim th tch l 8,9l ( o 2730C , 1atm ) Trong 2 axit A , B phi c: A . Hai axit u n chc B. Hai axit u a chc C. Mt axit n chc,1 axit a chc D. Cha khng nh c Cu 194. Cho 5,76 gam axit hu c X n chc mch h tc dng ht vi CaCO3 thu c7,28g mui hu c. Hi X l: A. Axit acrylic B. Axit metacrylic C. Axit axetic D. Axit fomic Cu 195. t chy hon ton 7,2gam mt axit cacboxylic trong phn t c hai lin kt i cn dng 6,72 lit O2 (ktc), sn phm chy cho qua bnh ng nc vi trong d thy c 30gam kt ta. Cng thc phn t ca axit l: A. C3H4O4 B. C3H4O2 C. C4H6O4 D. C4H6O2 Cu196. Cho 5,8 gam hn hp 2 axit n chc tc dng vi mt lng va ru metylic di tc dng xc tc ca axit sufuric c c un nng. Lng nc thu c sau phn ng cho tc dng vi natri d thu c 224 ml kh hiro iu kin tiu chun. Khi lng este thu c bng: A 6,08 B. 5,94 C. 5,8 D. Khng xc nh c. Cu 197. in li 3 dd CH3COOH 0,1M; CH3COOH 0,001M v HCl c sp xp theo dy sau: A. CH3COOH 0,1M < CH3COOH 0,001M < HCl B. CH3COOH 0,001M < CH3COOH 0,1M < HCl C. HCl < CH3COOH 0,1M < CH3COOH 0,001M D. CH3COOH 0,001M < HCl < CH3COOH 0,1M Cu 198. cng thc n gin nht cu mt axit no a chc l (C3H4O3)n . Tm cng thc cu to thu gn ca axit trn: A. C2H5 (COOH)2 B. C4H7 (COOH)3 C. C3H5 (COOH)3 D. Tt c u sai Cu 199. Ly 300 ml dung dch CH3COONa 1M trn vi 120ml dung dch H2SO4 1M ri un nng ti kh thu c m(g) cn khan. m c gi tr no sau y : A. 21,96g B. 23,6g C. 19,8g D. 20,32g Cu 200. Cho hn hp ancol metylic v mt ancol ng ng ca n tc dng vi Na d thy bay ra 672ml H2 (o ktc). Nu cho hn hp ancol trn tc dng vi 10g axit axetic (CH3COOH) th khi lng este sinh ra t nht l bao nhiu? Gi s hiu sut este ho l 100%: A. 4,44g B. 7,24g C. 6,24g D. 6,4g Cu 201. Cho dung dch axit axetat c nng x% tc dng va vi dung dch NaOH c nng 10% th dung dch mui c nng 10,25%. Vy x c gi tr no sau y: A. 20% B. 16% C. 17% D. 15%. Cu 202. t chy ht m gam mt axit n chc no, mch h c (m + 2,8) gam CO2 v (m - 2,4) gam nc. Cng thc phn t ca axit l: A. HCOOH B. CH3COOH C. C2H5COOH D. C3H7COOH Cu 203. Dung dch HCl v dng dch CH3COOH c cng nng mol, PH ca 2 dung dch tng ng l x, y. Quan h gia x v y l: (gi thit c 100 phn t CH3COOH th c 1phn t b in li) A. y = x-2 B. y = 100x C. y = x+2 D. y = 2x Cu204.t chy hon ton 4,38 gam1 axt no E mch thng thu c 4,032 lt CO2 (ktc) v 2,7 gam H2O.CTCT ca E l A. HCOOH B. CH2=C(CH3)COOH C. HOOC(CH2)4COOH D. C17H35COOH Cu 205. Cc sn phm t chy hon 3 gam axit cacboxylic X c dn ln lt i qua bnh 1 ng H 2SO4 v bnh 2 ng NaOH. Sau th nghim khi lng bnh 1tng 1,8 gam, khi lng bnh 2 tng 4,4gam. Nu cho ho hi 1gam X th c 373,4 ml hi ktc. CTCT cu X l : A. HCOOH B. CH3COOH C C2H3COOH D. C2H5COOH Cu 206 trung ho 10,6 gam hh HCOOH, CH3COOH c t l s mol 1:1 cn dng V lt dd NaOH 1M, Ca(OH)2 0,5M Vy gi tr ca V l: A. 0,05 B. 0,1 C. 0,15 D. 0,2 Cu 207. Hn hp X gm 2 axit no: A1 v A2. t chy hon ton 0,3 mol X thu c 11,2 lt kh CO2 ktc. trung ho 0,3 mol X cn 500ml dd NaOH 1M. CTCT ph hp ca 2 axit l: A. CH3COOH; C2H5COOH B. HCOOH; (COOH)2 C. HCOOH; C2H5COOH D. CH3COOH; HOOC-CH2-COOH Cu 208. Cho 60g axit axetic tc dng vi 60g ru etylic( xc tc H2SO4 c v nng) c 60g etylxetat.Hiu sut este ho t. A 76,66% B. 68,18 % C. 52,27 % D. 50 %

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Cu 209 Mt hn hp X gm 2 axit n chc no k tip nhau v H2O. Cho hn hp tc dng vi Na d thu c 0,896l kh H2 (ktc). Nu t hon ton 1/2 hh trn ri dn hn hp sau phn ng qua bnh 1 cha CaCl 2 khan v bnh 2 cha KOH. Sau th nghim khi lng bnh 1 tng 1,08g bnh 2 tng 2,2g.Vy 2 axit n chc no trn l nhng axit no di y: A. CH3COOH; C2H5COOH B. C2H5COOH; C3H7COOH C. CH3COOH; HCOOH D. C4H9COOH; C3H7COOH Cu 210. Tng s mol ca cc ht c trong 10 ml dung dch HCOOH 0,3 M (bit in li ca axt trong dung dch bng 2%) A. 0.036 B. 0,003 C. 0,00306 D. 0,00336 Cu 211. Trn a gam mt ru n chc v b gam mt axt n chc ri chia hn hp thnh 3 phn bng nhau. Cho phn mt tc dng ht vi Na thy thot ra 3,36 lt H2(ktc). t chy hon ton phn hai thu c 39,6 gam CO2. un nng phn ba vi H2SO4 c thu c 10,2 gam este (hiu sut p este l 100%). t chy 5,1 gam este th thu c 11 gam CO2 v 4,5 gam H2O. Cng thc phn t ca ru v axt l : A. C4H9OH; HCOOH B. C2H5OH; C2H5COOH C. CH3OH; C3H7COOH D. C a v c Cu 212. Cho hh X gm ru metylic v 2 axt k tip nhau trong dy ng ng ca axt axetic tc dng ht vi Na thu c 6,72 lt kh H2 ktc. Nu un nng hh X ( c H2SO4 lm xc tc) th cc cht trong hh p va v thu c 25g hh este.% khi lng ca 2 axt trong X l: A. 19,74%; 48,7% B. 19,74%; 80,26% C. 22,8%; 48,54% D. 43,6%; 24,82% Cu 213.Axit hu c X no sau y tho mn iu kin: m (g) X + NaHCO3 Vlt CO2( t0C, P atm) o m (g) X + O2 t Vlt CO2( t0C, P atm) A HCOOH B. (COOH)2 C. CH2(COOH)2 D. a v b Cu 214. Hn hp A gm mt axit Cacboxylic no n chc v hai axit khng no n chc cha mt lin kt i trong gc Hidrocacbon k tip nhau trong dy ng ng . Cho A tc dng va vi 100ml dung dch NaOH 2M, sau p c 17,04g cht rn khan. Mt khc, t chy hon ton hn hp A thu c 26,72 g hn hp CO2 v H2O . Tn gi ca cc Axit trong A l A. Etanoic, Propenoic v Butenoic B. Metanoic, Butenoic v Pentenoic C. Etanoic, Butenoic v Pentenoic D. Metanoic, Propenoic v Butenoic Cu 215: Cho cc cht ClCH2COOH (a); BrCH2COOH (b); ICH2COOH (c); FCH2COOH (d). Chiu tng dn tnh axit ca cc cht trn l: A. (a) < (b) < (c) < (d) B. (b) < (a) < (c) < (d) C. (c) < (b) < (a) < (d) D. (a) < (b) < (d) < (c) Cu 216: Cho cc cht C6H5COOH (a); p-H2NC6H4COOH (b); p-O2NC6H4COOH (c). Chiu tng dn tnh axit ca dy trn l: A. (a) < (b) < (c) B. (a) < (c) < (b) C. (b) < (a) < (c) D. (b) < (c) < (a) Cu 217: mnh ca cc axit: HCOOH (I); CH3COOH (II); CH3CH2COOH (III); (CH3)2CHCOOH (IV) theo th t tng dn l: A. I < II < III < IV B. IV < III < II < I C. II < IV < III < I D. IV < II < III < I Cu 218: S ng phn ca axit C4H6O2 l: A. 2 B. 3 C. 4 D.5 Cu 219: Trong cc ng phn axit cacboxylic khng no, mch h c cng thc phn t l C 4H6O2. Axit c ng phn cis-trans l: A. CH2=CH-CH2COOH. B. CH3CH=CHCOOH C. CH2=C(CH3)COOH. D. Khng cht no c ng phn cis-trans. Cu 230: Trong s cc tnh cht sau, tnh cht no khng phi l tnh cht ca anehit axetic ? A. Tc dng vi H2. B. Tc dng vi NaOH. C. Tc dng AgNO3/NH3. D. Tc dng Cu(OH)2/NaOH. Cu 231: Trong s cc tnh cht sau, tnh cht no khng phi l tnh cht ca anehit acrylic ? A Tc dng vi dung dch Br2. B. Tc dng vi ru metylic. C. Trng hp. D. Tc dng vi O2, to.

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Cu 232: Cho dy chuyn ha: CH2=CH2 + O2 ( PdCl2, CuCl2, to) B B + HCN D Cht D c cng thc l: A. CH3-CH2-Cl B. CH2=CH-CNC. CH3-CH(OH)-CN D. CH3COOH Cu 233: Trong s cc hp cht sau, cht no dng ngm xc ng vt ? A. dd HCHO B. dd CH3CHO C. dd CH3COOH D. dd CH3OH Cu 234: Cho cc phn ng sau: A + dd NaOH ( to) B + C B + NaOH ( rn, to) kh D + E D (1500oC) F + H2 F + H2O ( xc tc, nhit ) C Cc cht A v C c th l: A. HCOOCH=CH2 v HCHO B. CH3COOCH=CH2 v HCHO C. CH3COOCH=CH2 v CH3CHO D. CH3COOC2H5 v CH3CHO Cu 235. Trong phn ng trng ngng gia phenol v anehit fomic, xc tc c dng l: A. Dung dch axit. B. Dung dch bazo. C. Cht xc tc khc. D. Axit hoc bazo. Cu236: Mt hp cht A c cng thc C3H6O, bit rng A khng phn ng vi Na, nhng c tham gia phn ng trng gng. Cng thc cu to ca A phi l: A. CH3COCH3. B. C3H5OH. C. CH3CH2CHO. D. CH2=CH-CH2OH. Cu237: Phn ng este ha c c im l: A. Xy ra chm. B. Thun nghch. C. Xy ra khng hon ton. D. C A, B, C u ng. Cu 238: Trong phn ng: C6H5COOH + HNO3 (t l mol 1:1) cht hu c D,D l: A. o-NO2-C6H4COOH. B. m-NO2-C6H4COOH. C. p-NO2-C6H4COOH. D. Axit 1,3,5-trinitrobenzoic. Cu 239: Trong phn ng: CH3COOH + CHCH A.Cng thc ca A l: A. CH3OCOCH=CH2. B. CH3CH=CHCOOH. C. CH3COOCH=CH2. D. CH2=CHCH2COOH. Cu 240: Trong phn ng: CH2=CHCOOH + HBr X (spc) Cng thc ca X l: A. CH2CHBrCOOH. B. CH2BrCH2COOH. C. CH2BrCHCOOH. D. CH3CHBrCOOH. Cu 241: Mt axit cacboxylic no dn chc c cng thc n gin nht l C2H3O. Cng thc cu to c th c l: A. CH2=CH-CH2COOH. B. CH2=C(CH3)COOH. C. CH3CH=CHCOOH. D. C A, B, C u ng. Cu 242: F l cht no trong s cc cht sau y: A. CH3CH2CH2COONa. B. CH3CH2COONa. C. CH2(COOK)2. D. CH3COONa. Cu 243: Cng thc cu to ca D l: A. CH3CH2OH. B. CH3CHO. C. HCOOCH3. D. CH3COOH. Cu 244: Tn gi ca A l: A. Axetilen. B. Etilen. C. Propan. D. Etan.

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Cu 245: Xt cc phn ng sau: (1). CH3COOH + Na (2). CH3COOH + NaCl (3). C6H5OH + NaHCO3 (4). C17H35COONa + HCl Phn ng no trong cc phn ng trn khng xy ra: A. 1 B. 4 C. 2 D. 2,3 Cu 246: Hp cht c cng thc CxHyOz c khi lng phn t l 60 vC. Trong cc cht trn c cht A tc dng c vi Na2CO3 sinh ra CO2. Cht B tc dng c vi Na v c phn ng trng gng. Cht C tc dng c vi NaOH nhng khng tc dng c vi Na.Cng thc cu to c th c ln lt ca A, B, C l: A. C3H7COOH; HOCH2CH2CHO; CH3COOCH3.B. HCOOH; (CH3)2CHOH; CH3CH2OCH3. C. C2H5COOH; HOCH2CH2CHO; C2H5COOCH3. D. CH3COOH; HOCH2CHO; HCOOCH3. Cu 247: A c cng thc l: CH3CH(CH3)COCH3. Tn ca A l: A. 3-metylbutan-2-on B. 2-metylbutan-3-on C. 3-metylbutan-2-ol D. 2-metylbutan-3-ol Cu 248: Cho hp cht: (CH3)2CHCHO. Tn thay th ca cht l: A. 2-metyl propanal B. Isobutan C. Isopropanal D. C A, B, C u ng. Cu 249: CH3-CH(CH3)-CH(CH3)-COOH c tn thay th l: A. Axit 2-metyl-3-etylbutanoic B. Axit 3-etyl-2metylbutanoic C. Axit i-2,3 metylpentanoic D. Axit 2,3-imetylbutanoic Cu 250: Tn gi ca axit CH2=C(CH3)COOH l: A. Axit 2-metylpropenoic B. Axit 2-metyl-propaoic C. Axit metacrylic D. A, C u ng. Cu 251: Tn gi ca axit (CH3)2CHCOOH l: A. Axit 2-metylpropanoic B. Axit isobutyric C. Axit butyric D. C A, B u ng Cu 252: Tn ca axit CH3-CH2-CCl2-CH(CH3)-COOH l: A. 3,3-iclo-2-metylpentanoic B. Axit 3,3-iclo-4-metylpentanoic C. 2-metyl-3,3-iclopentanoic D. Axit 3,3-iclo-3-etyl-2-metylpentanoic Cu 253: Cho axit HOOC-CH2CH2CH2CH2-COOH. Tn gi ca axit ny l: A. Axit aipic B. Axit 1,4-butanicacboxylic C. Axit 1,5-hexaioic D. C A, B, C u sai. Cu 254: Cho cc cht: axeton, anehit axetic, ru isopropylic. nhn bit anehit khng dng ha cht: A. AgNO3/NH3 B. NaOH C. Cu(OH)2/NaOH D. dd Br2 Cu 255: Ha cht no sau y dng phn bit anehit fomic v anehit axetic ? A. AgNO3/NH3 B. Na C. Na2CO3 D. H2 Cu 256: Ha cht no sau y dng phn bit HCHO v CH2=CHCHO ? A. Dung dch Br2 B. Qu tm C. Khng phn bit c D. Kali Cu 257. Ha cht no sau y dng phn bit anehit fomic v ru metylic ? A. Na B. AgNO3/NH3 C. Cu(OH)2/NaOH D. C A, B, C Cu 258. Cc anehit th hin tnh oxi ha trong phn ng vi cht: A. H2/Ni, to B. AgNO3/NH3 C. Cu(OH)2/NaOH D. O2 Cu 259. Khi oxi ha ancol no sau y th thu c anehit: A. (CH3)2CHOH B. CH3CH2OH C. CH3CH(OH)C2H5 D. C 3 u ng Cu 260. ng vi cng thc phn t C5H10O s c bao nhiu ng phn v anehit ? A. 1 B.2 C.3 D.4 Cu 261. Hp cht no sau y khng cha nhm CHO ? A. HCOOCH3 B. CH3CHO C. CH3COOH D. HCHO

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Cu 262. Trong s cc cht sau cht no khng tc dng c vi AgNO3/NH3 ? A. HCHO B. C2H2 C. HCOOCH3 D. CH3COOH Cu 263. phn bit HCOOH v CH3COOH ngi ta dng: A. Dung dch NaOH B. Na C. C A, B, C u ng D. Ag2O/NH3 Cu 264. phn bit HCOOH v CH2=CHCOOH ngi ta dng: A. Dung dch Br2 B. AgNO3/NH3 C. Cu(OH)2/NaOH D. C A, B, C u ng Cu 265. phn bit CH3COOH v C2H5OH ngi ta dng: A. Na B. Dung dch Br2 C. NaOH D. Dung dch H2SO4. Cu 266. phn bit CH3COOH v CH2=CHCOOH ta dng ha cht: A. NaOH B. Dung dch KMnO4 C. Dung dch Br2 D. B v C Cu 267. phn bit HCOOH v CH3COOH ngi ta dng: A. dd H2SO4 B. NaOH C. A v B D. Na2CO3 Cu 268. T C2H2 iu ch HCHO cn t nht bao nhiu phn ng: A. 6 B. 2 C. 3 D. 4 Cu 269. iu ch CH3CHO t Al4C3 cn t nht bao nhiu phng trnh phn ng: A. 2 B. 3 C. 4 D. 5 Cu 270. Axetanehit khng th tng hp trc tip t: A. Vinylaxetat B. C2H4 C. C2H2 D. C2H6 Cu 271. Axit axetic khng th iu ch trc tip t cht no ? A. CH3CHO B. CH3CCl3 C. C2H5OH D. CH3OCH3 Cu 272. iu ch trc tip CH3COOH ngi ta c th i t: A. CH3CHO B. CH3COONa C. C2H5OH D. C 3 cu trn Cu 273. Cho 1,02g hn hp hai anehit A v B k tip nhau trong dy ng ng ca anehit no, n chc phn ng vi dung dch AgNO3/NH3 un nng thu c 4,32g Ag. Cng thc ca A, B l: A. HCHO v CH3CHO B. CH3CHO v C2H5CHO C. C2H5CHO v C3H5CHO D. C2H3CHO v C3H5CHO Cu 274. Cho 0,92g hn hp gm axetilen v anehit axetic phn ng hon ton vi dung dch AgNO 3/NH3 d th thu c 5,64g hn hp rn. Thnh phn phn trm v khi lng ca axetilen trong hn hp l: A. 28,26% B. 32,98% C. 35,54% D. 23,45% Cu 275:Hiu sut phn ng oxi ha ru thnh anehit l: A. 60% B. 34% C. 67% D.65% Cu 276. Cng thc cu to ca A l: A. C2H5OH B. CH3OH C. CH2=CH-CH2OH D.CH2=CH-CH2CH2OH Cu 277. Khi them mt lng d dung dch Ag2O/NH3 vo 7,4g hn hp CH3CHO v HCHO, thu c 64,8g kt ta. Thnh phn phn trm theo khi lng ca CH3CHO trong hn hp l: A. 60,3% B. 59,45% C. 39,7% D. 45,5% Cu 278. Cho CH3OH tc dng vi CuO nng , ly d, thu c anehit fomic. Cho hn hp rn cn li sau phn ng tc dng ht vi HNO3 m c thu c 0,734 lt NO2 ( 27oC v 765 mmHg). Khi lng anehit sinh ra l: A. 0,45g B. 0,9g C. 0,18g D. 0,225g Cu 279. Cho 0,87g mt anehit no, n chc phn ng hon ton vi Ag2O/NH3 thu c 3,24g Ag. Cng thc cu to ca anehit l: A. CH3CHO B. C2H5CHO C. CH3CH2CH2CHO D.(CH3)2CHCHO Cu 280. Khi cho 0,75g anehit fomic phn ng hon ton vi dung dch AgNO3/NH3 d th khi lng Ag gii phng l:

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A. 10,8g B. 21,6g C. 2,7g D.5,4g Cu 281. Oxi ha 8g ru metylic bng CuO ri cho anehit tan vo 10g nc. Nu hiu sut phn ng l 80% th nng anehit trong dung dch l: A. 67% B. 44,4% C. 37,5% D. 45,9% Cu 282. Anehit fomic c th tng hp trc tip bng cch oxi ha CH4 bng O2 c xc tc V2O5 20oC. Tnh khi lng HCHO thu c nu ban u dng 4,48m3 CH4 (ktc). Hiu sut phn ng l 75%. A. 3kg B. 4,5kg C. 4,8kg D. 5,4kg Cu 283. Axit cacboxylic n chc, no A c t khi hi so vi oxi l 2,75. Vy cng thc phn t ca A l: A. C2H4O2 B. C3H6O2 C. C4H8O2 D. C4H6O2 Cu 284. trung ha 8,8g mt axit cacboxylic A thuc dy ng ng ca axit axetic cn 100ml dung dch NaOH 1M. Cng thc cu to c th c ca A l: A. CH3CH2CH2COOH B. CH3COOH C. CH3CH2CH2CH2CH2COOH D. HCOOH Cu 285. trung ha ht 60g gim n th cn 50ml NaOH 1M. Nng phn trm ca axit axetic trong gim n l: A. 3% B. 4% C. 5% D. 6% Cu 286. Khi lng axit axetic trong gim n thu c l bao nhiu khi ln men 0,5lt ru etylic 6o. Bit khi lng ring ca ru etylic l 0,8g/ml. ( hiu sut cc phn ng l 100%) A. 31,3g B. 34,5g C. 37,7g D. 39,8g Cu 287. t chy mt axit cacboxylic no n chc A. Trong phn t oxi chim 53,33% v khi lng. Cng thc cu to ca A l: A. HCOOH B. CHC-COOH C. CH3COOH D. CH2=CH-COOH Cu 288. Cho 180g axit axetic tc dng vi lng d ru etylic c mt axit sunfuric c lm xc tc. trng thi cn bng, nu hiu sut phn ng l 66% th khi lng este thu c l: A. 246g B. 174,24g C. 274g D. 276g Cu 289. trung ha hn hp ca phenol v axit axetic cn dng 23,4ml KOH 20% ( khi lng ring 1,2g/ml). Hn hp ban u khi tc dng vi nc brom to nn 16,55g kt ta. Khi lng ca axit trong hn hp l: A. 2g B. 5g C. 3g D. 4g Cu 290. Khi trung ha 25ml dung dch mt axit cacboxylic no n chc A th cn 200ml dung dch NaOH 0,25M. C cn th thu c 4,1g cht rn. Cng thc cu to ca A l: A. HCOOH B. CH3CH2COOH C. CH2=CH-COOH D. CH3COOH Cu 291. 2,76g hn hp axit axetic v axit acrylic va lm mt mu hon ton 50g dung dch Br 9,6%. trung ha ht 1,38g hn hp hai axit trn th cn bao nhiu ml dung dch NaOH 0,25M ? A. 40ml B. 80ml C.50ml D.60ml Cu 292. t chy 4,09g hn hp A gm hai axit cacboxylic l ng ng k tip nhau trong dy ng ng ca axit axetic ngi ta thu c 3,472lt kh CO2 (ktc). Cng thc cu to ca cc axit trong hn hp phi l: A. HCOOH v CH3COOH B. CH3COOH v C2H5COOH C. C2H5COOH v (CH3)2CHCOOH D. C2H5COOH v CH3CH2CH2COOH Cu 293. t chy hon ton 1,52g hn hp axit fomic v axit axetic ngi ta thu c 0,896lt CO 2 (ktc). Nu ly lng hn hp axit trn ri thc hin phn ng trng bc th khi lng bc thu c l bao nhiu ? A. 3,72g B. 4,05g C. 4,32g D. 4,65g

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B.CC BI RA TSDH:Cu 1. Cho cc cht: HCN, H2, dung dch KMnO4, dung dch Br2. S cht phn ng c vi (CH3)2CO l A. 4. B. 1. C. 2. D. 3. Cu 2. Dy gm cc cht u iu ch trc tip (bng mt phn ng) to ra anehit axetic l: A. CH3COOH, C2H2, C2H4. B. C2H5OH, C2H4, C2H2. C. HCOOC2H3, C2H2, CH3COOH. D. C2H5OH, C2H2, CH3COOC2H5. Cu 3. Dy gm cc cht c th iu ch trc tip (bng mt phn ng) to ra axit axetic l: A. CH3CHO, C6H12O6 (glucoz), CH3OH. B. C2H4(OH)2, CH3OH, CH3CHO. C. CH3CHO, C2H5OH, C2H5COOCH3. D. CH3OH, C2H5OH, CH3CHO. Cu 4. Qu trnh no sau y khng to ra anehit axetic? A. CH3COOCH=CH2 + dung dch NaOH (to). B. CH2=CH2 + O2 (to, xc tc). C. CH2=CH2 + H2O (to, xc tc HgSO4). D. CH3CH2OH + CuO (to). Cu 5. Trong cng nghip, axeton c iu ch t. A. propan-1-ol. B. propan-2-ol. C. xiclopropan. D. cumen. Cu 6. S ng phn xeton ng vi cng thc phn t C5H10O l: A. 6. B. 4. C. 5. D. 3. Cu 7. Axit cacboxylic no, mch h X c cng thc thc nghim (C3H4O3)n, vy cng thc phn t ca X l A. C9H12O9. B. C3H4O3. C. C6H8O6. D. C12H16O12. Cu 8. Oxi ho 4,48 lt C2H4 ( ktc) bng O2 (xc tc PdCl2, CuCl2), thu c cht X n chc. Ton b lng cht X trn cho tc dng vi HCN (d) th c 7,1 gam CH3CH(CN)OH (xianohirin). Hiu sut qu trnh to CH3CH(CN)OH t C2H4 l: A. 60%. B. 70%. C. 50%. D. 80%. Cu 9. un nng V lt hi anehit X vi 3V lt kh H2 (xc tc Ni) n khi phn ng xy ra hon ton ch thu c mt hn hp kh Y c th tch 2V lt (cc th tch kh o cng iu kin nhit , p sut). Ngng t Y thu c cht Z; cho Z tc dng vi Na sinh ra H2 c s mol bng s mol Z phn ng. Cht X l anehit A. khng no (cha mt ni i C=C), hai chc. B. no, hai chc. C. khng no (cha mt ni i C=C), n chc. D. no, n chc. Cu 10. Hai hp cht hu c X, Y c cng cng thc phn t C3H6O2. C X v Y u tc dng vi Na; X tc dng c vi NaHCO3 cn Y c kh nng tham gia phn ng trng bc. Cng thc cu to ca X v Y ln lt l A. HCOOC2H5 v HOCH2COCH3. B. HCOOC2H5 v HOCH2CH2CHO. C. C2H5COOH v HCOOC2H5. D. C2H5COOH v CH3CH(OH)CHO. Cu 11. Hai hp cht hu c X v Y l ng ng k tip, u tc dng vi Na v c phn ng trng bc. Bit phn trm khi lng oxi trong X, Y ln lt l 53,33% v 43,24%. Cng thc cu to ca X v Y tng ng l A. HCOOCH3 v HCOOCH2-CH3. B. HO-CH(CH3)-CHO v HOOC-CH2-CHO. C. HO-CH2-CH2-CHO v HO-CH2-CH2-CH2-CHO. D. HO-CH2-CHO v HO-CH2-CH2-CHO. Cu 12. Cho cc hp cht hu c: (1) ankan; (2) ancol no, n chc, mch h; (3) xicloankan;(4) ete no, n chc, mch h;. (5) anken; (6) ancol khng no (c mt lin kt i C=C), mch h; (7) ankin; (8) anehit no, n chc, mch h; (9) axit no, n chc, mch h; (10) axit khng no (c mt lin kt i C=C), n chc. Dy gm cc cht khi t chy hon ton u cho s mol CO2 bng s mol H2O l: A. (2), (3), (5), (7), (9). B. (3), (4), (6), (7), (10). C. (3), (5), (6), (8), (9). D. (1), (3), (5), (6), (8). Cu 13. t chy hon ton a mol mt anehit X (mch h) to ra b mol CO2 v c mol H2O (bit b = a + c). Trong phn ng trng gng, mt phn t X ch cho 2 electron. X thuc dy ng ng anehit. A. no, hai chc. B. no, n chc. C. khng no c hai ni i, n chc. D. khng no c mt ni i, n chc. Cu 14. t chy hon ton 1 mol hp cht hu c X, thu c 4 mol CO2. Cht X tc dng c vi Na, tham gia phn ng trng bc v phn ng cng Br2 theo t l mol 1 : 1. Cng thc cu to ca X l A. HO-CH2-CH2-CH=CH-CHO. B. HOOC-CH=CH-COOH. C. HO-CH2-CH2-CH2-CHO. D. HO-CH2-CH=CH-CHO. Cu 15. t chy hon ton 0,1 mol mt axit cacboxylic n chc, cn va V lt O2 ( ktc), thu c 0,3 mol CO2 v 0,2 mol H2O. Gi tr ca V l: A. 6,72. B. 4,48. C. 8,96. D. 11,2.

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Cu 16. t chy hon ton mt hp cht hu c X, thu c 0,351 gam H2O v 0,4368 lt kh CO2 ( ktc). Bit X c phn ng vi Cu(OH)2 trong mi trng kim khi un nng. Cht X l A. CH2=CH-CH2-OH. B. C2H5CHO. C. CH3COCH3. D. O=CH-CH=O. Cu 17. Hiro ho hon ton hn hp M gm hai anehit X v Y no, n chc, mch h, k tip nhau trong dy ng ng (MX < MY), thu c hn hp hai ancol c khi lng ln hn khi lng M l 1 gam. t chy hon ton M thu c 30,8 gam CO2. Cng thc v phn trm khi lng ca X ln lt l A. HCHO v 32,44%. B. CH3CHO v 49,44%. C. CH3CHO v 67,16%. D. HCHO v 50,56%. Cu 18. Hiro ho hon ton m gam hn hp X gm hai anehit no, n chc, mch h, k tip nhau trong dy ng ng thu c (m + 1) gam hn hp hai ancol. Mt khc, khi t chy hon ton cng m gam X th cn va 17,92 lt kh O2 ( ktc). Gi tr ca m l: A. 10,5. B. 8,8. C. 24,8. D. 17,8. Cu 19. Cho hn hp kh X gm HCHO v H2 i qua ng s ng bt Ni nung nng. Sau khi phn ng xy ra hon ton, thu c hn hp kh Y gm hai cht hu c. t chy ht Y th thu c 11,7 gam H2O v 7,84 lt kh CO2 ( ktc). Phn trm theo th tch ca H2 trong X l: A. 35,00%. B. 65,00%. C. 53,85%. D. 46,15%. Cu 20. Cho dy cc cht: HCHO, CH3COOH, CH3COOC2H5, HCOOH, C2H5OH, HCOOCH3. S cht trong dy tham gia phn ng trng gng l: A. 5. B. 4. C. 6. D. 3. Cu 21. Cho hn hp gm 0,1 mol HCHO v 0,1 mol HCOOH tc dng vi lng d Ag2O (hoc AgNO3) trong dung dch NH3, un nng. Sau khi cc phn ng xy ra hon ton, khi lng Ag to thnh l A. 64,8 gam. B. 43,2 gam. C. 21,6 gam. D. 10,8 gam. Cu 22. t chy hon ton mt anehit X, thu c s mol CO2 bng s mol H2O. Nu cho X tc dng vi lng d Ag2O (hoc AgNO3) trong dung dch NH3, sinh ra s mol Ag gp bn ln s mol X phn ng. Cng thc ca X l A. (CHO)2. B. C2H5CHO. C. CH3CHO. D. HCHO. Cu 23. Cho 0,1 mol anehit X tc dng vi lng d AgNO3 (hoc Ag2O) trong dung dch NH3, un nng thu c 43,2 gam Ag. Hiro ho X thu c Y, bit 0,1 mol Y phn ng va vi 4,6 gam Na. Cng thc cu to thu gn ca X l A. CH3CH(OH)CHO. B. OHC-CHO. C. HCHO. D. CH3CHO. Cu 24. Cho 0,25 mol mt anehit mch h X phn ng vi lng d dung dch AgNO3 trong NH3, thu c 54 gam Ag. Mt khc, khi cho X phn ng vi H2 d (xc tc Ni, to) th 0,125 mol X phn ng ht vi 0,25 mol H2. Cht X c cng thc ng vi cng thc chung l A. CnH2n+1CHO (n 0). B. CnH2n-1CHO (n 2). C. CnH2n-3CHO (n 2). D. CnH2n(CHO)2 (n 0). Cu 25. Cho 2,9 gam mt anehit phn ng hon ton vi lng d AgNO3 (hoc Ag2O) trong dung dch NH3 thu c 21,6 gam Ag. Cng thc cu to thu gn ca anehit l A. HCHO. B. CH2=CH-CHO. C. OHC-CHO. D. CH3CHO. Cu 26. Cho 6,6 gam mt anehit X n chc, mch h phn ng vi lng d AgNO3 (hoc Ag2O) trong dung dch NH3, un nng. Lng Ag sinh ra cho phn ng ht vi axit HNO3 long, thot ra 2,24 lt kh NO (sn phm kh duy nht, o ktc). Cng thc cu to thu gn ca X l A. HCHO. B. CH3CHO. C. CH2 = CHCHO. D. CH3CH2CHO. Cu 27. Cho 3,6 gam anehit n chc X phn ng hon ton vi mt lng d Ag2O (hoc AgNO3) trong dung dch NH3 un nng, thu c m gam Ag. Ho tan hon ton m gam Ag bng dung dch HNO3 c, sinh ra 2,24 lt NO2 (sn phm kh duy nht, ktc). Cng thc ca X l A. C3H7CHO. B. C2H5CHO. C. C4H9CHO. D. HCHO. Cu 28. Cho 0,1 mol hn hp X gm hai anehit no, n chc, mch h, k tip nhau trong dy ng ng tc dng vi lng d dung dch AgNO3 trong NH3, un nng thu c 32,4 gam Ag. Hai anehit trong X l A. HCHO v C2H5CHO. B. CH3CHO v C2H5CHO. C. C2H3CHO v C3H5CHO. D. HCHO v CH3CHO. Cu 29. Khi oxi ha hon ton 2,2 gam mt anehit n chc thu c 3 gam axit tng ng. Cng thc ca anehit l A. HCHO. B. CH3CHO. C. C2H3CHO. D. C2H5CHO. Cu 30. Khi cho a mol mt hp cht hu c X (cha C, H, O) phn ng hon ton vi Na hoc vi NaHCO3 th u sinh ra a mol kh. Cht X l A. axit aipic. B. ancol o-hiroxibenzylic. C. axit 3-hiroxipropanoic. D. etylen glicol. Cu 31. t chy hon ton a mol axit hu c Y c 2a mol CO2. Mt khc, trung ha a mol Y cn va 2a mol NaOH. Cng thc cu to thu gn ca Y l A. CH3-COOH. B. HOOC-COOH. C. C2H5-COOH. D. HOOC-CH2-CH2-COOH.

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Cu 32. Cho hn hp X gm hai axit cacboxylic no, mch khng phn nhnh. t chy hon ton 0,3 mol hn hp X, 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 axit l: A. HCOOH, HOOC-CH2-COOH. B. HCOOH, C2H5COOH. C. HCOOH, CH3COOH. D. HCOOH, HOOC-COOH. Cu 33. Trung ho 5,48 gam hn hp gm axit axetic, phenol v axit benzoic, cn dng 600 ml dung dch NaOH 0,1M. C cn dung dch sau phn ng, thu c hn hp cht rn khan c khi lng l A. 6,84 gam. B. 4,90 gam. C. 6,80 gam. D. 8,64 gam. Cu 34. trung ha 6,72 gam mt axit cacboxylic Y (no, n chc), cn dng 200 gam dung dch NaOH 2,24%. Cng thc ca Y l: A. C2H5COOH. B. HCOOH. C. C3H7COOH. D. CH3COOH. Cu 35. Cho 5,76 gam axit hu c X n chc, mch h tc dng ht vi CaCO3 thu c 7,28 gam mui ca axit hu c. Cng thc cu to thu gn ca X l A. CH3COOH. B. CH2=CH-COOH. C. CH3-CH2-COOH. D. HCC-COOH. Cu 36. 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. Cng thc phn t ca X l A. HCOOH. B. C3H7COOH. C. CH3COOH. D. C2H5COOH. Cu 37. Cho 0,04 mol mt hn hp X gm CH2=CH-COOH, CH3COOH v CH2=CH-CHO phn ng va vi dung dch cha 6,4 gam brom. Mt khc, trung ho 0,04 mol X cn dng va 40 ml dung dch NaOH 0,75 M. Khi lng ca CH2=CH-COOH trong X l: A. 1,44 gam. B. 0,56 gam. C. 0,72 gam. D. 2,88 gam. Cu 38. Trung ho 8,2 gam hn hp gm axit fomic v mt axit n chc X cn 100 ml dung dch NaOH 1,5M. Nu cho 8,2 gam hn hp trn tc dng vi mt lng d dung dch AgNO3 trong NH3, un nng th thu c 21,6 gam Ag. Tn gi ca X l: A. axit metacrylic. B. axit propanoic. C. axit acrylic. D. axit etanoic. Cu 39. Hn hp X gm axit Y n chc v axit Z hai chc (Y, Z c cng s nguyn t cacbon). Chia X thnh hai phn bng nhau. Cho phn mt tc dng ht vi Na, sinh ra 4,48 lt kh H2 ( ktc).t chy hon ton phn hai, sinh 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-CH2-COOH v 54,88%. B. HOOC-COOH v 42,86%. C. HOOC-COOH v 60,00%. D. HOOC-CH2-COOH v 70,87%. Cu 40. Anehit no mch h X c cng thc n gin nht C2H3O. Cng thc phn t ca X l A. C6H9O3. B. C4H6O2. C. C8H12O4. D. C2H3O. Cu 41. Oxi ho khng hon ton ancol isopropylic bng CuO nung nng, thu c cht hu c X. Tn gi ca X l A. metyl phenyl xeton. B. propanal. C. imetyl xeton. D. metyl vinyl xeton. Cu 42. iu kin thch hp: cht X phn ng vi cht Y to ra anehit axetic; cht X phn ng vi cht Z to ra ancol etylic. Cc cht X, Y, Z ln lt l: A. C2H2, H2O, H2. B. C2H2, O2, H2O. C. C2H4, O2, H2O. D. C2H4, H2O, CO. Cu 43. Axeton c iu ch bng cch oxi ho cumen nh oxi, sau thu phn trong dung dch H2SO4 long. thu c 145 gam axeton th lng cumen cn dng (gi s hiu sut qu trnh iu ch t 75%) l A. 400 gam. B. 600 gam. C. 500 gam. D. 300 gam. Cu 44. t chy hon ton 2,76 gam hn hp X gm CxHyCOOH, CxHyCOOCH3, CH3OH thu c 2,688 lt CO2 (ktc) v 1,8 gam H2O. Mt khc, cho 2,76 gam X phn ng va vi 30 ml dung dch NaOH 1M, thu c 0,96 gam CH3OH. Cng thc ca CxHyCOOH l A. CH3COOH. B. C2H5COOH. C. C2H3COOH. D. C3H5COOH. Cu 45. Hn hp X gm axit panmitic, axit stearic v axit linoleic. trung ho m gam X cn 40 ml dung dch NaOH 1M. Mt khc, nu t chy hon ton m gam X th thu c 15,232 lt kh CO2 (ktc) v 11,7 gam H2O. S mol ca axit linoleic trong m gam hn hp X l: A. 0,010. B. 0,015. C. 0,020. D. 0,005. Cu 46. Hn hp X gm 1 ancol v 2 sn phm hp nc ca propen. T khi hi ca X so vi hiro bng 23. Cho m gam X i qua ng s ng CuO (d) nung nng. Sau khi cc phn ng xy ra hon ton, thu c hn hp Y gm 3 cht hu c v hi nc, khi lng ng s gim 3,2 gam. Cho Y tc dng hon ton vi lng d dung dch AgNO 3 trong NH3, to ra 48,6 gam Ag. Phn trm khi lng ca propan-1-ol trong X l A. 16,3%. B. 65,2%. C. 48,9%. D. 83,7%. Cu 47. Cho m gam hn hp etanal v propanal phn ng hon ton vi lng d dung dch AgNO3 trong NH3, thu c 43,2 gam kt ta v dung dch cha 17,5 gam mui amoni ca hai axit hu c. Gi tr ca m l A. 10,2. B. 10,9. C. 9,5. D. 14,3. Cu 48. Cho 16,4 gam hn hp X gm 2 axit cacboxylic l ng ng k tip nhau phn ng hon ton vi 200 ml dung dch NaOH 1M v KOH 1M, thu c dung dch Y. C cn dung dch Y, thu c 31,1 gam hn hp cht rn khan. Cng thc ca 2 axit trong X l:

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A. C3H6O2 v C4H8O2. B. C3H4O2 v C4H6O2. C. C2H4O2 v C3H4O2. D. C2H4O2 v C3H6O2. Cu 49. Axit cacboxylic X c cng thc n gin nht l C3H5O2. Khi cho 100 ml dung dch axit X nng 0,1M phn ng ht vi dung dch NaHCO3 (d), thu c V ml kh CO2 (ktc). Gi tr ca V l: A. 336. B. 112. C. 448. D. 224. Cu 50. Hn hp gm 0,1 mol mt axit cacboxylic n chc v 0,1 mol mui ca axit vi kim loi kim c tng khi lng l 15,8 gam. Tn ca axit trn l A. axit etanoic. B. axit propanoic. C. axit butanoic. D. axit metanoic. Cu 51. 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 dng va vi dung dch NaOH, thu c dung dch cha 11,5 gam mui. Mt khc, nu cho Z tc dng vi mt lng d 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%.

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