^0 ot cung di^u kien nhiet d6 va ap suát). Hidrocacbon X la
Ạ C2H2. B. C2H4.
C a u 3 ( l , 0 diém)
TCr 12kg rugu etylic nguy6n chat se pha duac bao nhieu rugu 30"? Biet kh6'i lugng rieng ciia rugu nguygn chát la 0,8 kg/lit. , j-.v
Ạ 40 lit. B. 60 lit. C. 50 lit. D. 70 lit. Cau 4 (1,5 diem)
D6't chay hoan toan m6t lugng hgp chát hidrocacbon X, thu dugc s6' mol
CO2 bang s6' mol nu6c. Hidrocacbon X c6 thé c6 c6ng thiic nao trong cac cOng thiic saủ
Ạ C2H2. B.CH4.
C. C2H4. D. QHfị
Cau 5 (0,5 diém)
Cho so d6 phan ling:
A + CjHjOH ^ H , S O . d
Hai hgp chát A va B Mn lugt la Ạ CH3COOH va CO2.
C. H2O va CH3COOH.
Cau 6 (0,5 diém)
Trong cac phan ling sau:
1. CgH, + A > CgH^Cl + B 2. X + Bi^ >C2H,Br; A, B va X tucfng ling la Ạ CI2, HCl va C2H4. C. CI2, HBr va Q H j . CH3COOC2H, + B B. HCl va H2Ọ D. CH3COOH va H2Ọ B. Brj, H2 va C2H4. D. CI2, HCl va C2H6. 2. TL/ LUAN (4 DIEM)
Cho 1,2 gam axit axetic tac dung v6i 1,15 gam rugu etylic c6 axit H2SO4 dac xuc tac. Hieu suát phan utig la 55%. Kh6'i lugng este thu dugc la m gam.
a) Viét phuang trinh hoa hoc. b) Tinh gia tri cua m.
B. H a d N G D A N L A M B A I K I E M T R A
Ị j)g K I £ M T R A 1 5 P H U T .S
De so 1.1 •'••^h
-ỊTRACNGHIEMKHACHQUAN 'Jf'V ^
Cau 1. Dap an diing la B.
Khi SO2 va khi CO2 tan vao trong nudrc, tao thanh axit H2SO3 va H2CO3
nen hai khi nay lam quy tim ^m chuyén thanh dọ
Cau 2. Dap an diing la Ạ
Cho Bă0H)2 phan ling voi ttag dung dich b dap an A : - Dung dich c6 két tua trang xuát hien la dung dich H2SO4.
BăOH)^+H2SO4 ^BaSÔ I + 2H2O
- Dung dich c6 két tua nau do xuát hien la dung djch FeCl3: 2FeCl3 + 3Ba(OH)^ -> 2Fe(OH)3 i + 3BaCl2
(nau do)
- Dung dich con lai kh6ng c6 hien tugng gi la NaCl. Cau 3. Dap an dung la B.
Phuang trinh hoa hoc: . . CaCO, + 2HC1 -> CaClj + CÔ t + H^O
;aLfb <lo<* :}!rr
(1) 50
Theo (1): S6' mol CO2 = s6' molCaCOj = — = 0,5(mol). 100
V i hieu suát phan img la 85% nen thé tich CO2 la:
V™, =0,5.22,4.85% = 9,52 (lit). vMii in' •«
2. TIJ LUAN
a) Cac phuang trinh hoa hoc:
2Al + 3H2S04^Al2(S04)^+3H21 (1)
Fe + H2SO4 ^ FeS04 + H21 (2)
b) Ggi X va y la so mol Fe va A l c6 trong 11 gam h6n hgp. Ta c6:
56x + 2 7 y = l l (I)
(11)
T h e o ( l ) v a ( 2 ) : n„^ = x + | y = ^ = 0,4
Giai he phuang trinh (I) va (II), dugc: x = 0,1; y = 0,2
Des6 1.2
1. T R A C NGHIEM K H A C H Q U A N '
Cau 1. Dap an dung la B
Cac phucfng trinh hoa hoc:
Zn + 2HCl->ZnCl,+H, t Zn + H^SO, ^ ZnSO, + T Zn + H^SO, ^ ZnSO, + T
CuO + 2HCl^CuCl2+H20
CuO + HjSO, CuSÔ + H^O
Cau 2. Dap an dung la B.