Bi tp chng este-lipitHa hc 12 BI TP CHNG ESTE-LIPITA. Cc dng bi tpDng 1: Xc nh este thng qua phn ng t chyBi 1. t chy hon ton 4,2g mt este E thu c 6,16g CO2; 2,52g H2O. Xc nh CTPT, CTCT, gi tn E.Bi 2. t chy hon ton 0,1 mol mt cht hu c X cn 4,48 lt kh oxi (ktc) thu c CO2 v H2O vi t l s mol tng ng l 1:1. Bit rng X tc dng vi NaOH to ra 2 cht hu c. CTCT ca X lA. HCOOC3H7B. HCOOCH3C. CH3COOC2H5D. C2H5COOCH3Bi 3. t chy hon ton 7,4g mt este X thu c 13,2g CO2 v 5,4g H2O. Bit rng X tham gia phn ng trng gng. CTCT ca X lA. HCOOC2H5B. HCOOCH3C. CH3COOC2H5D. C2H5COOCH3Bi 4. Hn hp X gm 2 este no, n chc, mch h. t chy hon ton mt lng X cn dng va 3,976lit kh oxi (ktc), thu c 6,38g CO2. Mt khc X tc dng vi NaOH, thu c 1 mui v 2 ancol l ng ng k tip. CTPT ca 2 este trong hn hp X lA. C2H4O2 v C3H6O2B. C3H4O2 v C4H6O2C. C3H6O2 v C4H8O2D. C2H4O2 v C5H10O2Bi 5. Hn hp Z gm 2 este X v Y to bi cng 1 ancol v 2 axit cacboxylic k tip nhau trong dy ng ng (MX< MY). t chy hon ton m gam Z cn dng 6,16 lt kh oxi (ktc), thu c 5,6 lt kh CO2 (ktc) v 4,5 gam H2O. CT ca este X v gi tr m tng ng lA. CH3COOCH3 v 6,7B. HCOOC2H5 v 9,6C. HCOOCH3 v 6,7D. (HCOO)2C2H4 v 6,6Bi 6. Hn hp Z gm hai este X v Y to bi cng mt ancol v 2 axit cacboxylic. t chy hon ton hn hp X gm 2 este no, n chc ta thu c 1,8g H2O. Thy phn hon ton hn hp 2 este trn thu c hn hp Y gm 1 ancol v axit. Nu t chy hn hp Y th th tch CO2 thu c ktc lA. 2,24lB. 3,36lC. 1,12lD. 4,48lDng 2: Xc nh este thng qua phn ng thy phnBi 1. t chy hon ton 1 mol este X thu c 3 mol kh CO2. Mt khc khi x phng ha 0,1 mol este trn thu c 8,2g mui cha natri. CTCT ca X lA. HCOOC2H5B. HCOOCH3C. CH3COOC2H5D. CH3COOCH3Bi 2. Thy phn 1 este X c t khi hi i vi hidro l 44 th c mt mui natri c khi lng bng 41/44 khi lng este. CTCT ca este lA. HCOOC2H5B. HCOOC3H7C. CH3COOC2H5D. CH3COOCH3Bi 3. Khi t chy hon ton 4,4g cht hu c X n chc thu c sn phm chy ch gm 4,48l kh CO2 (ktc) v 3,6g H2O. Nu cho 4,4g hp cht X tc dng vi ddNaOH va n khi phn ng hon ton, thu c 4,8g mui ca axit hu c Y v cht hu c Z. Tn ca X lA. isopropyl axetatB. etyl propionatC. metyl propionatD. etyl axetatBi 4. Cho 0,1 mol este A vo 50g dd NaOH 10% un nng n khi este phn ng hon ton (cc cht bay hi khng ng k). Dung dch thu c c khi lng 58,6g. C cn dung dch thu c 10,4g cht rn khan. CTCT ca A lA. HCOOCH=CH2B. CH2=CHCOOCH3C. HCOOCH2CH=CH2D. C2H5COOCH3Bi 5. X phng ha hon ton 22,2g hn hp gm 2 este HCOOC2H5 v CH3COOCH3 bng dung dch NaOH 1M (un nng). Th tch dung dch NaOH ti thiu cn dng lA. 400mlB. 300mlC. 150mlD. 200mlBi 6. X phng ha 8,8g etyl axetat bng 200ml dd NaOH 0,2M. Sau khi phn ng xy ra hon ton, c cn dung dch thu c cht rn khan c khi lng lA. 8,56gB. 3,28gC. 10,4gD. 8,2gBi 7. Este n chc X c t khi hi so vi CH4 l 6,25. Cho 20g X tc dng vi 300ml dung dch KOH 1M (un nng). C cn dung dch sau phn ng thu c 28g cht rn khan. CTCT ca X lA. CH2=CHCH2COOCH3B. CH2=CHCOOC2H5C. CH3COOCH=CHCH3D. C2H5COOCH=CH2Bi 8. X phng ha hon ton 1,99g hn hp 2 este bng dung dch NaOH thu c 2,05g mui khan ca 1 axit cacboxylic v 0,94g hn hp 2 ancol l ng ng k tip nhau. CT ca 2 este lA. HCOOCH3 v HCOOC2H5B. C2H5COOCH3 v C2H5COOC2H5C. CH3COOC2H5 v CH3COOC3H7D. CH3COOCH3 v CH3COOC2H5Bi 9. Thy phn hon ton 0,2 mol 1 este cn dng va 100g dd NaOH 24% thu c 1 ancol v 43,6g hn hp mui ca 2 axit cacboxylic n chc. Hai axit lA. HCOOH v CH3COOH B. CH3COOH v C2H5COOHC. C2H5COOH v C3H7COOHD. HCOOH v C2H5COOH2. Bi ton kt hp t chy v thy phn v dng bi thy phn:+ Nu t chy c: nCO2= nH2O l este no, n chc .+ V p thy phn nn dng CT l: R-COOR hoc CnH2n+1COOCmH2m+1. (n0; m1) ty theo bi ton.

Cng thc R-COOR thng dng phn ng vi NaOH CT cu to ca este.

Ptp/ : .+ Ta thay cc ga tr ca cc nhm chc tng ng vo theo d kin cho hoc khi ta bin lun c:mrn = mmui + mNaOH d + m KOH d+ i vi este no n chc khi x phng ha ta lun c neste = nNaOH = nmuoi = nancol . + p dng nh lut bo ton khi lng ta c: meste + mNaOH = mmui + mru .+ C cn dung dch sau phn ng c cht rn khan, ch n lng NaOH cn d hay khng.Cu 6: Khi t chy 1 este n chc cho nCO2 = nH2O. Thy phn hon ton 6 g este ny th cn dng 0,1 mol NaOH. CTPT ca X l: A. C5H10O2. B. C2H4O2. C. C3H6O2. D. C4H8O2.Cu 7: X l este to bi ancol thuc dy ng ng ca ancol etylic v axit thuc dy ng ng ca axit axetic. Thy phn hon ton 6,6g X cn 0,075mol NaOH. CTCT ca X l:A. CH3COOCH3. B. CH3COOC2H5. C. HCOOCH3. D. CH3COOC3H7.Cu 8: x phng ha 17,4 gam mt este no, n chc cn dng 300 ml dung dch NaOH 0,5M. Este c CTPT l: A. C5H10O2. B. C6H12O2. C. C3H6O2. D. C4H8O2.

Cu 9: Thy phn 0,1mol este no, n chc mch h X cn V (ml) dung dch NaOH 1M. Ga tr ca V l:A. 100ml. B. 200ml. C. 150ml D. 300ml.Cu 10: Este n chc X c phn trm khi lng cc nguyn t C, H, O ln lt l 48,65%; 8,11%; 43,24%. Cng thc phn t ca X l:A. C2H4O2. B. C3H6O2 . C. C4H8O2. D. C4H6O2.Cu 11: t chy hon ton 0,1 mol este X n chc thu c 0,3 mol CO2 v 0,3mol H2O. Nu cho X tc dng ht NaOH th thu c 8,2g mui. Tn gi ca X l:A. Etyl fomiat. B. Metyl fomiat. C. Metyl axetat. D. Etyl axetat.Cu 12: t chy hon ton a gam hn hp cc este no, n chc mch h. Sn phm chy c dn vo bnh ng dung dch Ca(OH)2 d thy khi lng bnh tng 6,2 gam. Khi lng kt ta thu c l: A. 6g. B. 8g. C. 10g. D. 12g.Cu 13: Khi t chy hon ton 4,4 gam este X n chc thu c sn phm chy ch gm 4,48 lt CO2 ( ktc) v 3,6 gam H2O. Nu cho 4,4 gam hp cht X tc dng vi dung dch NaOH va n khi phn ng hon ton, thu c 4,8 gam mui ca axit hu c Y v cht hu c Z. Tn ca X l:A. metyl propionat. B. isopropyl axetat. C. etyl propionat. D. etyl axetat.Cu 14: Hai este n chc X v Y l ng phn ca nhau. Khi ho hi 1,85 gam X, thu c th tch hi ng bng th tch ca 0,7 gam N2 (o cng iu kin). Cng thc cu to thu gn ca X v Y l: A. HCOOCH2CH2CH3 v CH3COOC2H5. B. C2H5COOCH3 v HCOOCH(CH3)2.C. C2H3COOC2H5 v C2H5COOC2H3. D. HCOOC2H5 v CH3COOCH3.Cu 15: X phng ha 8,8 gam etylaxetat bng 150ml dd NaOH 1M. Sau khi phn ng xy ra hon ton, c cn dd thu c cht rn khan c khi lng l:A. 4,92 gam. B. 8,56 gam. C. 8,2 gam. D. 10,2 gamCu 16: Cho 10,4g hn hp X gm axit axetic v etyl axetat tc dng va vi 150g dung dch natri hiroxit 4%. Phn trm khi lng ca etyl axetat trong hn hp bng:A. 33,3% B. 42,3% C. 57,6% D. 39,4%Cu 17: X phng ha 8,8 gam etyl axetat bng 200 ml dd NaOH 0,2M. Sau khi phn ng xy ra hon ton, c cn dd thu c cht rn khan c khi lng l: A. 8,56 gam.B. 8,2 gam.C. 3,28 gam.D. 10,4 gam.Cu 18: X phng ho hon ton 1,99 gam hn hp hai este bng dung dch NaOH thu c 2,05 gam mui ca mt axit cacboxylic v 0,94 gam hn hp hai ancol l ng ng k tip nhau. Cng thc ca hai este l: A. C2H5COOCH3 v C2H5COOC2H5. B. CH3COOC2H5 v CH3COOC3H7.C. HCOOCH3 v HCOOC2H5. D. CH3COOCH3 v CH3COOC2H5.Cu 19: X phng ha 6,6 gam etyl axetat bng 100 ml dung dch NaOH 0,2M. Sau khi phn ng xy ra hon ton, c cn dung dch thu c cht rn khan c khi lng l: A. 4,28 gam. B. 4,10 gam. C. 1,64 gam. D. 5,20 gam. Cu 20: Thy phn hon ton 14,8 gam hn hp 2 este n chc ng phn nhau th cn dng va 100 ml dung dch NaOH 2M. Cng thc cu to thu gn ca 2 este l: A. HCOOC2H5 v CH3COOCH3. B. CH3COOCH3 v C2H5COOH. C. HCOOC2H5 v C2H5COOH. D. CH3COOC2H5 v C2H5COOCH3. Cu 21: t chy hon ton 1,48 g hp cht hu c X thu c 1,344 lt CO2 (ktc) v 1,08 g H2O. Nu cho 1,48 g X tc dng vi NaOH th thu c 1,36 g mui. CTCT ca X l: A. CH3COOCH3. B. HCOOC2H5. C. HCOOC3H7. D. C2H5COOH.Dng 3: Hiu sut phn ng este ha - Hng s cn bngBi 1. Cho 3g axit axetic phn ng vi 2,5g ancol etylic (xc tc H2SO4 c, t0) th thu c 3,3g este. Hiu sut phn ng este ha lA. 70,2%B. 77,27%C. 75%D. 80%Bi 2. Cho 6,6g axit axetic phn ng vi 4,4g hn hp gm ancol metylic v ancol etylic t l 2:3 v s mol (xc tc H2SO4 c, to) th thu c a(g) hn hp este. Hiu sut chung l 60%. Gi tr ca a lA. 4,944B. 5,103C. 4,44D. 8,8Bi 3. Ngi ta cho a mol axit axetic phn ng vi a mol ancol etylic. Khi phn ng t n trng thi cn bng th hng s cn bng KC=4. T l % axit axetic chuyn ha thnh etyl axetat lA. 60%B. 66%C. 66,67%D. 70%Bi 4. Khi thc hin phn ng este ha 1 mol CH3COOH v 1 mol C2H5OH, lng este ln nht thu c l 2/3 mol. t hiu sut cc i l 90% (tnh theo axit) khi tin hnh phn ng este ha 1 mol CH3COOH cn s mol C2H5OH l (bit cc phn ng este ha thc hin cng nhit )A. 0,342B. 2,925C. 2,412D. 0,456Cu 22: un nng 6,0 gam CH3COOH vi 6,0 gam C2H5OH (c H2SO4 lm xc tc, hiu sut phn ng este ho bng 50%). Khi lng este to thnh l: A. 4,4 gam. B. 6,0 gam. C. 5,2 gam. D. 8,8 gam.Cu 23: Cho 45 gam axit axetic phn ng vi 69 gam etanol (c H2SO4 c lm xc tc) un nng, thu c 41,25 gam este. Hiu sut ca phn ng este ho l: A. 62,50%. B. 50,00%. C. 40,00%. D. 31,25%. Cu 24: un 12 gam axit axetic vi 13,8 gam etanol (c H2SO4 c lm xc tc) n khi phn ng t ti trng thi cn bng, thu c 11 gam este. Hiu sut ca phn ng este ho l:A. 55%. B. 75%. C. 50%. D. 62,5%. Cu 25: Khi thc hin phn ng ha este gia 6g CH3COOH v 9,2g C2H5OH vi hiu sut 70% thu c bao nhiu gam este?A. 8,8g. B. 6,16g. C. 17,6g. D. 12,32g.Cu 26: Cho 45 gam axit axetic phn ng vi 69 gam etanol (c H2SO4 c lm xc tc) un nng, thu c 41,25 gam este. Hiu sut ca phn ng este ho l: A. 62,50%. B. 50,00%. C. 40,00%. D. 31,25%. Cu 27: Cho 12 g axit axetic tc dng vi 4,6 g ancol etylic (xc tc H2SO4 c, un nng). Sau p. thu c 4,4 g este. Hiu sut ca p. este ha l: A. 75% .B. 25%. C. 50%. D. 55%. Cu 28: Cho 6 g axit axetic tc dng vi 9,2 g ancol etylic (xc tc H2SO4 c, un nng), vi hiu sut t 80%. Sau p. thu c m gam este. Gi tr ca m l: A. 2,16g. B. 7,04g.C. 14,08g. D. 4,80 g.Cu 29: Cho 12 g axit axetic tc dng vi 4,6 g ancol etylic (xc tc H2SO4 c, un nng). Sau p. thu c 4,4 g este. Hiu sut ca p. este ha l: A. 75%. B. 25%. C. 50%. D. 55%. Cu 30: Ly 0,6 gam axit axtic tc dng vi lng d mt ancol n chc X thu c 0,592 gam mt este (H = 80%). Tm cng thc ancol? A. CH3OH. B. C2H5OH. . C2H3-CH2OH. D. C3H7OH. Dng 4: Xc nh ch s axit, ch s x phng ha Ton v cht boBi 1. trung ha ht lng axit t do c trong 5,6g cht bo ngi ta dng ht 6ml dd NaOH 0,1M. Ch s axit ca cht bo lA. 5B. 3C. 6D. 4Bi 2. X phng ha hon ton 17,24g cht bo cn va 0,06mol NaOH. C cn dung dch sau phn ng thu c khi lng x phng lA. 17,80gB. 18,24gC. 16,68gD. 18,38gCu 1: trung ho 15 gam mt loi cht bo c ch s axit bng 7, cn dng dung dch cha a gam NaOH. Gi tr ca a lA. 0,150. B. 0,200. C. 0,280. D. 0,075.Cu 1: Trung ho 2,8 gam cht bo cn 3ml dung dch KOH 0,1 M. Tnh ch s axit ca cht bo? A. 6B. 0,6C. 0,06D. 0,006Cu 2: Khi x phng ho hon ton 2,52 gam cht bo trung tnh cn 90 ml dung dch KOH 0,1M. Tnh ch s x phng ca cht bo trn? A. 200B. 192C. 190D. 198Cu 3: khi x phng ho hon ton 2,52 gam cht bo trung tnh thu c 0,2484gam glixerol. Tnh ch s x phng ca cht bo? A. 18B. 80C. 180D. 8Cu 4: x phng ho hon ton 100gam cht bo c ch s axit bng 7 ngi ta dng ht 0,32 mol KOH. Khi lng glixerol thu c l bao nhiu gam? A. 9,4 gam B. 9,3gam C. 8,487 gamD. 9,43 gamCu 5: Tnh khi lng KOH cn dng trung ho 4 gam cht bo c ch s axit l 7? A. 28mgB. 14mgC. 82mgD. p n khc.Cu 6: Tnh khi lng NaOH cn dng trung ho axit t do c trong 5 gam bo vi ch s axit bng 7? A. 0,025mgB. 0,025gC. 0,25mg D. 0,25gCu 7: X phng ho 1kg lipit c ch s axit l 2,8 ngi ta cn dng 350 ml KOH 1M. Khi lng glixerol thu c l bao nhiu? A. 9,2gamB. 18,4 gamC. 32,2 gamD. 16,1 gamCu 8: Mt loi m cha 40% triolein, 20% tripanmitin, 40% tristearin. X phng ho hon ton m gam m trn bng NaOH thu c 138 gam glixerol. Gi tr ca m l? A. 1209B. 1304,27C. 1326D. 1335Cu 9: Mt loi m cha 70% triolein v 30% tristearin v khi lng. Tnh khi lng x phng thu c khi x phng ho hon ton 100kg cht m bng NaOH? A. 90,8kg B. 68kgC. 103,16kgD. 110,5kgCu 11: Tnh ch s este ca mt loi cht bo cha 89% tristearin? A. 168B. 84C. 56D. p n khcCu 14: x phng ho 63mg cht bo trung tnh cn 10,08 mg NaOH. Tnh ch s x phng ho ca cht bo? A. 200B. 224C. 220D. 150Cu 15: trung ho axit t do c trong 5,6 gam cht bo cn 6 ml dung dch NaOH 0,1 M. Tnh ch s axit ca cht bo ni trn? A. 3,2B. 4C. 4,7Cu 16: phn ng vi 100 gam cht bo c ch s axit bng 7 phi dng ht 17,92 gam KOH. Tnh khi lng mui (x phng) thu c? A. 108,265gB. 100,265gC. 100gD. 120gCu 17: Tnh khi lng NaOH cn dng trung ho cc axit bo t do c trong 200 gam cht bo, bit cht bo c ch s axit bng 7? A. 5gB. 9gC. 1g D. 15gB. Bi tp trc nghimCu 1: Mt hn hp X gm 2 este A, B c cng CTPT C8H8O2 v u cha vng benzen. X phng ht 0,2 mol X, ta cn 0,3 lt dung dch NaOH 1M, thu c 3 mui. Tnh khi lng mi mui.A. 8,2 gam CH3COONa; 14,4 gam C6H5COONa; 11,6 gam C6H5ONa.B. 4,1 gam CH3COONa; 14,4 gam C6H5COONa; 11,6 gam C6H5ONa.C. 8,2 gam CH3COONa; 7,2 gam C6H5COONa; 5,8 gam C6H5ONa.D. 4,1 gam CH3COONa; 14,4 gam C6H5COONa; 17,4 gam C6H5ONa.Cu 2: Trong cc pht biu sau:1. Du thc vt ch cha este khng no.2. X phng (iu ch t cht bo vi NaOH) th rn cn x phng (iu ch t axit bo vi KOH) th lng.3. Du thc vt v du bi trn (dng cho cc ng c) c cng chc ha hc.4. Dng du thc vt tt cho sc khe hn m ng vt.Chn pht biu sai:A. 1, 3.B. 2, 4.C. 1, 4.D. 2, 3.Cu 3: Thy phn hon ton 8,8 gam este n chc, mch h X vi 100ml dung dch KOH 1M (va ) thu c 4,6 gam mt ancol Y. Tn gi ca Y l:A. Etyl fomiat.B. Etyl propionat.C. Etyl axetat.D. Propyl axetat.Cu 4: t chy hon ton 3,7 gam mt este n chc X thu c 3,36 lt kh CO2 (ktc) v 2,7 gam H2O. CTPT ca X l:A. C2H4O2.B. C3H6O2.C. C4H8O2.D. C5H8O2.Cu 5: 10,4 gam hn hp X gm axit axetic v etyl axetat tc dng va vi 150 gam dung dch natri hydroxyt 4%. Phn trm khi lng ca etyl axetat trong hn hp l:A. 22%.B. 42,3%.C. 59,7%.D. 88%.Cu 6: Mt este X pht xut t anol A v axit B n chc 0,01 mol X (mX = 8,90 gam) phn ng va vi 0,3 lt dung dch NaOH 0,1M cho ra ancol B v mui C (mC = 9,18 gam). Xc nh CTCT ca X.A. C3H5(OOCC15H31)3.B. C3H5(OOCC17H35)3.C. C3H5(OOCC17H33)3.D. C3H5(OOCC15H29)3.Cu 7: Cho 2,4 gam este X bay hi trong mt bnh kn dung tch 0,6 lt (lc u l chn khng). Khi este bay hi ht th p sut trong bnh 136,50C l 425,6 mmHg. thy phn 25,4 gam X cn 0,3 mol NaOH thu c 28,2 gam mt mui duy nht. Xc nh CTCT ca X, bit rng X pht xut t ancol a chc.A. C3H5(OOCCH3)3.B. C3H5(OOCC2H5)3.C. C2H4(OOCCH3)3.D. C3H5(OOCCH = CH2)3.Cu 8: Trong cc pht biu sau lin quan n cht ty ra:1. Nc cng l nc c cha Ca2+ v Mg2+.2. Khng dng x phng vi nc cng l v x phng to mui Ca2+ v Mg2+.3. C th dng cc cht ty ra tng hp nh C12H25 C6H4 SO3Na v mui Ca2+ v Mg2+ ca axit C12H25 C6H4 SO3H tan trong H2O.Chn pht biu sai:A. 1, 2.B. 3.C. Ch c 1.D. 2, 3.Cu 9: S hydro ha cc axit bo c mc ch:1. T cht bo khng no bin thnh cht bo no bn hn (kh b i do phn ng oxi ha).2. Bin cht bo lng (du) thnh cht bo rn (magarin).3. Cht bo c mi d chu hn.Trong 3 mc ch trn, chn mc ch c bn nht.A. Ch c 1.B. Ch c 2.C. Ch c 3.D. 1 v 2.Cu 10: ng vi CTPT C4H8O2 c bao nhiu este ng phn ca nhau?A. 2. B. 3. C. 4.D. 5.Cu 11: Cht X c CTPT C4H8O2, cht no khng phi l X?A. HCOOC3H7. B. C2H5COOCH3. C. CH3COOC2H5. D. HCOOC3H5. Cu 12: Thu phn este X c CTPT C4H8O2 trong dung dch NaOH thu c hn hp 2 cht hu c Y v Z, trong Z c t khi hi so vi H2 = 23. Tn ca X l:A. Etyl axetat.B. Metyl axetat. C. Metyl propionat. D. Propyl fomiat. Cu 13: Gi tn hp cht c CTPT nh sau: H3COOC CH2 COOCH(CH3)2 A. propyl metyl malonat. B. Metyl isopropyl malonat.C. Metyl isopropyl oxalat. D. Metyl isopropyl butaioat.Cu 14: Cho cc yu t sau y v phn ng este ho: 1. Hon ton.2. C gii hn.3. To nhit mnh 4. Nhanh. 5. Chm. A. 1, 3. B. 2, 4.C. 2, 5. D. 3, 5.Cu 15: phn ng este ho c hiu sut cao hn (cho ra nhiu este hn), ta nn: 1. Tng nhit . 2. Dng H+ xc tc. 3. Dng nhiu axit (hay ru) hn.4. Dng OH xc tc.Trong 4 bin php trn, nn chn bin php no?A. 1, 2.B. 3, 4. C. 2, 3. D. 3.Cu 16: phn ng thu phn c hiu sut cao v nhanh hn (c 2 iu kin) nn dng bin php no sao y?1. Dng H+ xc tc. 2. Dng OH .3. Tng nhit . 4. Dng nhiu nc.A. 1, 3. B. 2, 3, 4. C. 4. D. 1, 4.Cu 17: Cho CTPT C4H8O2 ca mt este. ng vi CTPT ny c bao nhiu ng phn khi b x phng ho cho ra 1 anehit v bao nhiu ng phn cho ra mui ca 1 axit khng no? Cho kt qu theo th t trn:A. 4, 3. B. 3, 2. C. 2, 2. D. 2, 3.Cu 18: Mt este c 10 nguyn t C, khi b x phng ho cho ra 2 mui v 1 anehit. Chn CTCT ca este ny trong 3 cng thc sau: 1. CH2 = CH OOC COOC6H5.2. CH2=CHCH2COOC6H5.3. CH C CH2 COOC6H5.A. Ch c 1. B. Ch c 2. C. 1, 2, 3. D. 2 v 3.Cu 19: Mt este X c cng thc l R COOR (vi R c 6 nguyn t C) c t khi hi i vi O2 nh hn 4,5. Khi x phng ho X bng dung dch NaOH ta thu c 2 mui c t l khi lng l 1,4146. Xc nh CTCT ca X: A. HCOOC6H5. B. CH3COOC6H5. C. C2H5COOC6H5.D. C3H7COOC6H5.Cu 20: Mt hn hp X gm 2 este A, B n chc ng ng k tip. Khi b x phng ho cho ra 2 mui v 1 ancol. Th tch dung dch NaOH 1M cn x phng ho 2 este ny l 0,3 lt. Xc nh CTCT v s mol mi este trong hn hp X bit rng khi lng mX = 23,6 gam v trong 2 axit no cho ra A, B khng c axit no cho phn ng trng gng:A. 0,1 mol CH3COOCH3 v 0,2 mol CH3COOC2H5. B. 0,2 mol CH3COOCH3 v 0,1 mol CH3COOC2H5. C. 0,2 mol CH3COOCH3 v 0,1 mol C2H5COOCH3. D. 0,2 mol HCOOCH3 v 0,2 mol CH3COOCH3.Cu 21: Gi tn este c CTCT nh sau: CH3CH2CH2COOCH = CH2. A. Vinylbutanoat. B. Etylbutanoat. C. Vinylpentanoat. D. Anlylbutanoat. Cu 22: Trong cc pht biu sau v phn ng thu phn cc este:1. Dng OH thay v H+ v OH lm vn tc phn ng tng mnh hn.2. Dng OH bin axit thnh mui, mui ny khng phn ng c vi ancol nh phn ng thu phn tr thnh hon ton.3.Tng t l nc, este, hiu sut phn ng tng ln.4. Nhit khng nh hng ln tc phn ng. A. 3, 4. B. 1, 3, 4. C. 1, 4. D. 2, 3. Cu 23: Trong phn ng thu phn sau:

CH3COOC2H5 + H2O CH3COOH + C2H5OH. tng hiu sut phn ng ( tng t l % este b thu phn), ta nn: 1. Thm H2SO4.2. Thm HCl.3. Thm NaOH. 4. Thm H2O. A. 1, 2.B. 3, 4. 3. Ch c 3. D. Ch c 4.Cu 24: un hn hp glixerol v axit stearic, axit oleic (c axit H2SO4 lm xc tc) c th thu c my loi trieste ng phn cu to ca nhauA. 3B. 4C. 6D. 5Cu 25: Pht biu no sau y sai?A. Trong cng nghip c th chuyn ha cht bo lng thnh cht bo rnB. Nhit si ca este thp hn hn so vi ancol c cng phn t khi.C. S nguyn t hidro trong phn t este n v a chc lun l mt s chn.D. Sn phm ca phn ng x phng ha cht bo l axit bo v glixerolCu 26: S ng phn este ca C4H8O2 tc dng c vi AgNO3/NH3 lA. 1B. 2C. 3D. 4Cu 27: Cho s chuyn ha:

Triolein . Tn ca Z lA. Axit linoleicB. Axit oleicC. Axit panmiticD. Axit stearicCu 28: Cho phng trnh phn ng thy phn sau:

ClCH2CH2OCOCH3 + KOH A (mui hu c) + B + C (mui v c)Vy A, B ln lt lA. CH3COOK v C2H4(OH)2B. CH3COOK v ClCH2CH2OHC. HCOOK v C2H4(OH)2 D. C2H5COOK v ClCH2CH2OHCu 29: Hp cht hu c mch h X c cng thc phn t C6H10O4. Thy phn X to ra hai ancol n chc c s nguyn t cacbon trong phn t gp i nhau. Cng thc ca X lA. CH3OCOCH2COOC2H5B. C2H5OCO-COOCH3C. CH3OCO-COOC3H7D. CH3OCO-CH2CH2-COOC2H5Cu 30: Thy phn este Z trong mi trng axit thu c hai cht hu c X v Y (MX< MY). Bng mt phn ng c th chuyn ha X thnh Y. Cht Z khng th lA. Metyl propionatB. Metyl axetatC. Etyl axetatD. Vinyl axetatCu 31: Khi du m lu th c mi hi kh chu. Nguyn nhn l do cht bo phn hy thnhA. AndehitB. AncolC. AxitD. XetonCu 32: Cho cc nhn inh sau:1/ Lipit bao gm cc cht bo, sp, sterit, phptpholipit chng u l cc este phc tp.2/ Cht bo l trieste ca glixerol vi cc axit icacboxylic c mch cacbon di khng phn nhnh.3/ Cht bo l trieste ca glixerol vi cc axit monocacboxylic c mch cacbon di, khng phn nhnh.4/ Du n l cc trieste ch yu cha cc gc axit bo khng no.5/ M n l cc trieste ch yu cha cc gc axit bo khng no.Cc nhn nh ng l:A. 1, 2, 3B. 1, 3, 5C. 2, 3, 5D. 1, 3, 4Cu 33: Cho s phn ng sau:

Vy Z lA. CH3 CH2 CH2COOHB. (CH3)2CHCOOHC. CH2=CH(CH3)COOHD. CH3 CH=CH - COOHCu 34: X phng ha mt hp cht c cng thc phn t C10H14O6 trong dung dch NaOH d, thu c glixerol v hn hp gm ba mui (khng c ng phn hnh hc). Cng thc ca ba mui l

A. CH2=CH COONa, HCOONa v CHC COONa.

B. CH3 COONa, HCOONa v CH3 - CHCH COONa.

C. HCOONa, CHC COONa v CH3 CH2 COONa.D. CH2=CH COONa, CH3 CH2 COONa v HCOONa.Cu 35: Este X c c im sau:- t chy hon ton X to thnh CO2 v H2O c s mol bng nhau;- Thy phn X trong mi trng axit c cht Y (tham gia phn ng trng gng) v cht Z (c s nguyn t cacbon bng mt na s nguyn t cacbon trong X).Pht biu khng ng lA. t chy hon ton 1 mol X sinh ra sn phm gm 2 mol CO2 v 2 mol H2O.B. Cht Y tan v hn trong nc.C. Cht X thuc loi este no, n chc.D. un Z vi dung dch H2SO4 c 1700C thu c anken.Cu 36: Cho cht X tc dng vi mt lng va dung dch NaOH, sau c cn dung dch thu c cht rn Y v cht hu c Z. Cho Z tc dng vi AgNO3 (hoc Ag2O) trong dung dch NH3, thu c cht hu c T. Cho cht T tc dng vi dung dch NaOH li thu c cht Y. Cht X c th lA. HCOOCH=CH2B. CH3COOCH=CH2C. HCOOCH3D. CH3COOCH=CH-CH3Cu 37: Hn hp M gm ancol no, n chc X v axit cacboxylic n chc Y, u mch h v c cng s nguyn t C, tng 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 lt kh CO2 (ktc) v 25,2 gam H2O. Mt khc, nu un nng M vi H2SO4 c thc hin phn ng este ha (hiu sut 80%) th s gam este thu c lA. 34,20B. 27,36C. 22,80D. 18,24Cu 38: Cho hn hp X gm hai hp cht hu c no, n chc tc dng va vi 100ml dung dch KOH 0,4M, thu c 1 mui v 336ml hi mt ancol (ktc). Nu t chy hon ton lng hn hp X trn, sai hp th ht sn phm chy vo bnh ng dung dch Ca(OH)2 d th khi lng bnh tng 6,82 gam. Cng thc ca hai hp cht hu c trong X lA. HCOOH v HCOOC2H5B. CH3COOH v CH3COOC2H5C. C2H5COOH v C2H5COOCH3D. HCOOH v HCOOC3H7Cu 39: trung ha 10 gam mt cht bo c ch s axit l 5,6 th khi lng NaOH 10% cn dng lA. 0,4 gamB. 0,5 gamC. 0,6 gamD. 0,7 gamCu 40: Khi x phng ha hon ton 2,52 gam cht bo Y c ch s x phng ha l 200 thu c 0,184 gam glixerol. Vy ch s axit ca Y lA. 55,5B. 80,8C. 66,7D. 10,15Cu 41: Thy phn hon ton 4,4 gam hn hp gm etyl axetat, metyl propionat v n-propyl fomat cn dng V (lt) dung dch NaOH 0,2M. Vy V c gi tr lA. 0,25B. 0,2C. 0,3D. 0,35Cu 42: t chy hon ton 5,6 lt (ktc) hn hp 2 este no, n chc l ng ng k tip thu c 19,712 lt CO2 (ktc). X phng ha cng lng este trn bng dung dch NaOH to ra 17 gam mt mui duy nht. CTCT ca 2 este lA. CH3COOCH3 v CH3COOC2H5B. HCOOCH3 v HCOOC2H5C. HCOOC2H5 v HCOOC3H7D. CH3COOC2H5 v CH3COOC3H7Cu 43: Thy phn hon ton 444 gam mt lipit thu c 46 gam glixerol v hai loi axit bo. Hai loi axit bo lA. C15H31COOH v C17H35COOHB. C17H31COOH v C17H33COOHC. C17H33COOH v C15H31COOHD. C17H33COOH v C17H35COOHCu 44: Tm phng n saiA. X phng gim hoc mt tc dng ty ra khi dng nc cng v to cc mui kt ta vi cc ion Ca2+, Mg2+.B. Bt git tng hp vn c th s dng vi nc cng v mui sunfonat c tan ln nn khng b kt ta vi ion Ca2+, Mg2+.C. Cc loi du thc vt c cha nhiu gc axit bo khng no, d tiu ha hn cht bo ca ng vt (m heo, m ng vt).D. Cht bo khng tan trong cc dung mi hu c v trong nc.Cu 45: Cho 20 gam mt este X (c phn t khi l 100 vC) tc dng vi 300 ml dung dch NaOH 1M. Sau phn ng, c cn dung dch thu c 23,2 gam cht rn khan. Cng thc cu to ca X lA. CH3COOCH=CHCH3B. CH2=CHCH2COOCH3C. CH2=CHCOOC2H5D. C2H5COOCH=CH2

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