Hay chpn c6ng thiJc diing.
3.71. A la mdt a - amino axit no, chi chiia m6t nhom -NH2 va mSt nhom.
- C O O H . Cho 8,9 gam A tac dung v6i dung dich H C l du, thu dugc 12,55 gam mu6'ị
Cf>ng thirc cáu tao ciia A la : Ạ CH3 - CH(NH2) - CH2 - COOH .
B. H 2 N - C H 2 - C H 2 - C O O H .
C. C H 3- C H ( N H 2 ) - C O O H .
D. C H 3 - C H 2 - C H ( N H 2) - C O O H .
Hay chon c6ng thufc dung.
3.72. Cho 9,85 gam h6n hgp hai amin no, don chiic, bac nhát đng dang ke tiép tac dung v6i dung dich HCl, thu dugc 18,975 gam mu6'ị tiép tac dung v6i dung dich HCl, thu dugc 18,975 gam mu6'ị
C6ng thiJc cáu tao ciia hai amin Mn lirgt la : Ạ CH3 - CH2 - NH2 va CH3 - (CH2 )2 - NH2 .
B. C H 3 - ( C H 2 ) 2 - N H 2 va C H 3 - ( C H 2 ) 3 - N H 2 .
C. C H 3 - ( C H 2 ) 3 - N H 2 va C H 3 - ( C H 2 ) 4 - N H j .
D. C H 3 - N H 2 va C H 3 - C H 2 - N H 2 .
Hay chon c6ng thurc dung.
3 73. D6't chiy hoan toan m6t amin X nọ dan chiJc, bac II mach ha, thu dugc CO2, va hai H2O theo ti le s6' mol tirong umg la 2 : 3. dugc CO2, va hai H2O theo ti le s6' mol tirong umg la 2 : 3.
C6ng thiJc cáu tao ciia X la :
Ạ C H 3- N H- C H 3 .
B. C H 3- N H- C 2 H 5 .
C. C H 3- N H- C 3 H 7 .
D. C 2 H 5- N H- C 2 H V
Hay chon c6ng thu:c diing.
3.74. Cho cac phan ling :
H 2 N - C H 2 -C O O H + HCl -> C I H 3 N - C H 2- C O O H (1) H2N - CH2 - COOH + NaOH -» HjN - CH2 - COONa + HjO (2)
Hai phan ling trfin churng to axit aminoaxetic : • ^, ,
Ạ Chi CO tinh axit. ^
B. Chi c6 tinh bazạ r j
C. C6 tinh oxi hoa va tinh khir. ,
D. C6 tinh chat luang tinh. Hay chon dap an diing.
n • 1 .") 4^ r c, .5 lidq 59
Chuaing 4
pOLiA/ic vfi vnr u€u POu/vi€ 4.1. Khi hoc bai polime, mfit hoc sinh da t6ng kd't : (adsbygoogle = window.adsbygoogle || []).push({});
1) Polime la nhiJng hgp chat c6 khd'i lirgng rát 16n. 2) Xenlulozo va tinh b6t la nhiJng polime thien nhifin.
3) Polime la nhffng hgp chat c6 khd'i lugng phan tir rat 16n, do nhigu don vi nho (ggi la mat xich) lien két vdri nhau tao ndn.
4) Polime la chai ran, khong tan trong nuoc, khong c6 nhiet do nonj^
chay xac dinh, khong bay hoị
5) Polime chi dirge difeu che bang phan ling trCing hgp.
6) Co hai loai polime : Polime thien nhifen va polime tdng hgp. Nhirng phat bieu diing la :
Ạ 1,3, 4,6; B. 2, 3, 4, 6; C. 2, 3, 4, 5 ; D. 1, 3, 5, 6. Hay chgn dap an diing.
4.2. Hay chgn cau sai :
Ạ O di6u kien thich hgp, tat ca cac hgp chát dan chirc cung c6 th^ trung hgp thanh polimẹ
B. H6 s6 polime hoa hay d6 polime hoa n cang lorn, phan tir khd'i cua polime cang caọ
C. Nhieu polime dirge di^u ch6' nh6 phan urng trung hgp, d6ng triint hgp va trung ngirng.
D. Trong cac phan ling hoa hoc, c6 nhi^u polime vSn giir nguydn mach cacbon, nhung cung co cac polime bi thay doi mach cacbon.
4.3. Hay ghep c6ng thirc ghi o c6t bfen trai vdi t6n polime ghi a c6t bfen phai
cho phii hgp :
Ten polime ' '
a) Policaproamit (nilon - 6) b) Xenlulozo
c) PVC
d) Poll (vinyl ancol) e) P.E Cong thi(c 1. (-CH2-CHCl-)n 2. ( - C H 2 - C H 2 - ) n 3. ( - C H 2 - C H 0 H - ) „ 4. ( - N H- ( C H 2) 5 - C O - ) n 5. (-C6H,oÔ-)„
4.4. C6ng thiirc cáu tao ciia cac chat :
CH3-COOH(l), CH, =CH-COOH(2). H 2 N- C H j - C 0 0 H ( 3 ) ,
H C H 0 ( 4 ) , H O - ( C H 2 ) 2 - 0 H ( 5 ) , Q^Il^ - NH2(6),
CH3 -CHOH -COOH(7), CH3 - CHCl -COOH (8),
CH2 =CH-CHC1-CH3(9), (CH3)2CO(10).
Nhirng chát co the trung hgp hoac triing ngung thanh polime : Ạ 2, 3, 4, 5, 7, 9.
B. 1,?, 3, 4, 5, 6, 7, 8, 9. C. 1, 2, 3, 4, 7, 9 . C. 1, 2, 3, 4, 7, 9 . D. 2, 3, 4, 5. 8, 9 . Hay chgn dap an dung.
4.5. C6 hgp chát polime : , ),
' - C H 2- C H -
60c-CH3^ Monome tao thanh polime trfen la :
Ạ C H 2 = C H 2 va C H 3- C O O H .
B. CH2 = C H - C 0 0 C H 3 . C. C H 3 - C O O - C H = CH2. C. C H 3 - C O O - C H = CH2. D. Ca A, B, C d^u dung. (adsbygoogle = window.adsbygoogle || []).push({});
Hay chgn eong thirc dung. '
4.6. Co hgp chat polime :
' - C H- ( C H 2 ) 2- C H -
^ CI OOC-CHsJ^ Hai monome thich hop d6ng trung hgp thanh polime tren la :
Ạ CH3-COOH va CH2C1-(CH2)2-CH3;
B. CH3 - COO - CH = CH2 va CH2 = CHCl; C. CH3 -COOH va CH2 =CHC1; C. CH3 -COOH va CH2 =CHC1;
D. C H 3- C O O - C H = CH2 va C H 3 - C H 2 C I ;
Hay chgn cong thurc dung.
4.7. PolUvinyi ancol) la polime dugc dieu che nhd phan ting trung hgp cua monome nao .sau dSy ? monome nao .sau dSy ?
Ạ CH2 =CH-COOCH3.
B. CH2 = C H- 0 C 0 - C H 3 .