24.9. Dung dich nao sau day c6 pH > 7?
Ạ Dung dich NaCl. B. Dung djch Al2(S04)3.
C. Dung dich NH4CỊ D. Dung dich CH.COONạ
m 25. ANDEHIT, XETON, AXIT CACBOXYLIC
25.1. Trong c6ng nghiSp, axeton dugc dieu ch^' tir
Ạ xiclopropan. B. propan-l-ol. C. propan-2-ol. D. cumen. C. propan-2-ol. D. cumen. 25.2. Cho so d6 phan ung :
NH3. ^ .X - I H O N O ^ . Y ^^"Q-^" ) Z.
^ (ti le mol 1:1)
Biet Z CO kha nang tham gia phan ting trang bac. Hai chat Y va Z 1 ^ lugt
Ạ CH3OH , HCOOH. B. C2H5OH, HCHO . C. CH3OH , HCHO . D. C2H5OH, CH3CHO . C. CH3OH , HCHO . D. C2H5OH, CH3CHO .
25.3. Oxi hoa 4,48 lit C2H4 (6 dktc) bang O, (xiic tac PdClj, CuClj), thu dugc chat X don chiic. Toan b6 lirgng chat X trfin cho tac dung v6i HCN (du) chat X don chiic. Toan b6 lirgng chat X trfin cho tac dung v6i HCN (du) thi duoc 7,1 gam CHiCH(CN)OH (xianohidrin). Ritu suát qua trinh tao CH.,CH(CN)OH tir C2H4 la
Ạ 70%. B. 80%. C.60%. D. 50%. C.60%. D. 50%.
25.4. M6t este c6 c6ng thiic phan tit la C4H6O2, khi thuy phan trong moi trucmg axit thu dirge axetandehit. C6ng thiic cáu tao thu ggn cua este do la axit thu dirge axetandehit. C6ng thiic cáu tao thu ggn cua este do la
Ạ CH2 = CH - COO - CH3. B. HCOO - C(CH3) = CH2 .
C. HC00-CH = CH-CH3 D. C H 3 C O O- C H- C H 2 .
25.5. Ba chát huu co mach hcf X, Y, Z c6 cung mOt c6ng thirc phan tit C3H6O va CO cac tfnh chát: X, Z d^u phan ung vdi nirdc brom; X, Y, Z d^u phan va CO cac tfnh chát: X, Z d^u phan ung vdi nirdc brom; X, Y, Z d^u phan
ling vdi H2 nhimg chi c6 Z kh6ng bi thay đi nhdm chiic; chat Y chi tac dung vdi brom khi c6 mat CH.COOH. dung vdi brom khi c6 mat CH.COOH.
Cac chat X, Y, Z Mn lugt la
.Ạ C2H5CHO, CH2 = C H - 0- C H 3 , (CH3)2CỌ
B. (CH3 )2 CO , C2H5CHO, CH2 = CH - CH2 - OH. C. C2H5CHO, (CH3)2CO , CH2 = CH - CH2 - OH. C. C2H5CHO, (CH3)2CO , CH2 = CH - CH2 - OH.
D. C H 2= C H- C H 2- O H , C2H5CHO, (CH3)2CỌ
25.6. Hai hgp chát hihi co X, Y cd cung c6ng thiic phan tir C^Hf,02. Ca X Y
66u tac dung v6i Na; X tac dung dugc NaHCG, con Y cd kha nang J^am
gia phan ung trang bac. C6ng thiic cáu tao ciia X va Y iSn lugt la Ạ QHsCOOH va HCOOQH,. Ạ QHsCOOH va HCOOQH,.
B. HCOOC2H,va HOCH2COCH3.
C. HCOOC2H5 va HOCH2CH2CHỌ
25.7. Ilidro hcxi hoan loan h6n hap M g6m hai andehit X va Y no, dcm chiic,
mach hor, ke tiep nhau trong day d6ng dang (Mx < My), thu duoc h6n hop
hai ancol c6 khoi lirgng Icm hem khd'i lucmg M la 1 gam. D6't chay hoan toan M thu dirge 30,8 gam COj. C6ng thiic va phSn trSm kh6'i lirong cua toan M thu dirge 30,8 gam COj. C6ng thiic va phSn trSm kh6'i lirong cua X Ian luot la
Ạ HCHO va 50,56% B. CH.CHO va 67,16% C. C H 3 C H O va 49,44% D. HCHO va 32,44% C. C H 3 C H O va 49,44% D. HCHO va 32,44%
25.8. Cho 0,04 mol mOt h6n hop X g6m CH2=CH-COOH, CH.COOH va
CH2=CH-CHO phan irng vira du vdi dung dich chira 6,4 gam brom. Mat
khac 66 trung hoa 0,04 mol X c^n dung vira du 40 ml dung djch NaOH
0,75M. Khoi lucftig jua CH^-CH-COOH trong X la Ạ 0,72 gain. B. 1,44 gam. Ạ 0,72 gain. B. 1,44 gam. C. 2,88 gam. D. 0,56 gam.
25.9. Chat hiru co X c6 cong tMc phan tu C^H^Oj. Cho 5 gam X tac dung vdi
dung dich NaOH, thu dugc mot hop chat hiJu co khong lam mat mau
n\j6c brom va 3,4 gam mot muÓị C6ng thiic cua X la
Ạ CH,COOC (CH,)^ CH2 B. HCOOCHjCI 1= CHCH,
C. HCOOCH= C H C H 2 C H , D. HCOOC (CHO=CHCH,
25.10. Hidro hoa chat huu co X thu dugc (CH,)2CHCH(0H)CHv Chat X co ten thay thé la thay thé la
Ạ metyl isopropyl xeton. B. 3-metylbutan-2-on. C. 2-metylbutan-3-on. D. 3-metylbutan-2-ol. C. 2-metylbutan-3-on. D. 3-metylbutan-2-ol.
25.11. Hgp chat hiJu co mach ho X co cong thiic phan tir C^HioỌ Chat X
khong phan vtng vdi Na, thoa man so do chuyen hoa sau:
X > Y ) Este CO mui chuoi chin.
Ten cua X la
Ạ pentanal. B. 2-iTietylbutanal. C. 2,2-dimetylpropanal. D. 3-metylbutanal. C. 2,2-dimetylpropanal. D. 3-metylbutanal.
25.12. C h o s o d 6 p h a n i r n g : Stiren > X ^^'l'" > Y > Z. Trong do X, Y, Z đu la cac san ph^m chinh. COng thiic cua X, Y, Z Mn Trong do X, Y, Z đu la cac san ph^m chinh. COng thiic cua X, Y, Z Mn lugt la
Ạ C^H.CHOHCH,, C,H,COCH„ C.H.COCHjBr. B. CfiHsCHjCH.OH, C.H.CH^CHO, C.H.CHjCOOH. B. CfiHsCHjCH.OH, C.H.CH^CHO, C.H.CHjCOOH. C. C^H^CHjCHjOH, C^H^CH^CHO, m-BrC.H.CHjCOOH. D. C.H.CHOHCH,, C;,H,COCH„ m-BrCfiH4C0CH,.
25.13. 6 dieu ki^n thfch hgp: chat X phan ling vdi chat Y tao ra i^ndehit axetic;
chat X phan umg vdi chat Z tao ra ancol êylic. Cac chat X, Y, Z ISn lirgt la
Ạ C2H4, O2, H 2 O . B. C2H2, H 2 O , H2.