9 85
X = 0,25 mol ^ ' ^ ^ ^ 025 " ^^'^ ' 14 n + 1 + 16 = 39,4 ^ n = 1,6.
n, = 1 ^ CH3 - NH2 ; n2 = 2 - » C2H5 - N H 2 . 3.73. Cong thiic diing la B. 3.73. Cong thiic diing la B.
Goi CTPT ciia X la C^Hsn+aN. Ta c6 :
CnH2n+3N ) nCOj + ( n + l , 5) H 2 0
Theo d^ bai: = - -)• n = 3. n + 1,5 3
C T C T c u a X l a : C H 3- N H- C 2 H 5 . 3.74. Dap an diing la D.
Axit aminoaxetic vira phan ling v6i axit vCra phan ling vdi ki^m, no c6 tinh chat luong tfnh.
184
Chttcfng 4
pouM€ vn vnr ucu POUMC
4.1. Dap an diing la B.
42. Cau sai la Ạ
4.3. NhCrng cap c6ng thiic - ten goi phi hop la : 1 - c ; 2 - e ; 3 - d ; 4 - a ; 5 - b . 1 - c ; 2 - e ; 3 - d ; 4 - a ; 5 - b . 4.4. Dap an diing la Ạ 4.5. C6ng thiic diing la C. 4.6. C6ng thiic diing la B. nCH2=CHCl + n C H 3 - C O O - C H = CH2 -> ^ (-CH(Cl) - CH2 - CH2 - CH(OOC - CH3 4.7. Ceng thiic diing la B.
Dieu ché poli (vinyl ancol) tCr c6ng thiic B theo 2 giai doan : nCH2 = C H - 0 C 0 - C H 3 -> ( - C H 2- C H ( 0 0 C - C H 3 ) - ) n
( - C H 2 - CH(OOC - CH3 + n H2O —
( - C H 2 - C H ( 0 H ) - ) n + n C H 3 C 0 0 H
4.8. Dap s6' diing la D.
Cac phuang trinh phan ling ciia 2 giai doan : ^ C H = C H + H2 ) C H 2 = C H 2 (1)
n C H 2 = C H 2 '"'''^ ) ( - C H 2 - C H 2- ) n (2)
Theo (1), (2) : s6' mol PE = sS'mol C2H2 = i ^ ^ = 75.000 mol.
V i hieu suát m6i giai doan la 60% n6n :
mpE = 75000 .28 ,60% .60% = 756.000 gam = 756 kg. 4.9. Dap so dung la B.
C^c phuang trinh phan trng :
CH = CH + HCl ^ CH2 = CHCl
n C H 2= C H C l ^ ( - C H 2- C H C l - ) n
S6 m o l PVC = s6' mol C2H2 = i i ^ ^ i ^ = 75.000 mol. ^ ^ 22,4
V i hieu suát m6i giai doan la 7 5 % nen :
m p v c = 75000 .62.5 .75% .75% = 2.636.718 gam = 2.636,718 kg.
4.10. Cong thiic dung la B.
S6 mol cac chat : n^Oj ~ ' '^HzO - ^'^^
Goi CTPT cua X la C^Hỵ
C^Hy — ^ XCO2 + ^ H2O
y
1 mol X mol — m o l 2 2
0,1 mol 0,5 mol 0,4mol
- > X = 5, y = 8.
CTPT cua X la CjHg . X la isopren (cong thiic B).
4.11. Dap an dung la D.
Cao su buna - S la san ph^m đng trilng hop butadien va stiren. 4.12. Dap an diing la D.
4.13. Dap an diing la C. C) day chu y : C) day chu y :
