
11-luyện tập chương 1 (mới)
Authored by tuyen phanthituyen84@gmail.com
Chemistry
5th Grade
10 Questions
Used 3+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Chất nào sau đây thuộc loại chất điện li mạnh?
A. CH3COOH.
B. C2H5OH.
C. H2O.
D. NaCl.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 9: Dung dịch nào sau đây có khả năng dẫn điện?
A. Dung dịch đường.
B. Dung dịch muối ăn.
C. Dung dịch rượu.
D. Dung dịch benzen trong ancol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 12: Phương trình điện li viết đúng là
A. H2SO4 → 2H+ + SO4-
B. NaOH --> Na+ + OH
C. HF --> 2H+ + F-
D. AlCl3 → Al3+ +3 Cl-
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 16: Trong dung dịch axit nitric (bỏ qua sự phân li của H2O) có những phần tử nào?
A. H+,NO3-.
B. H+, NO3-, H2O.
C. H+, NO3-, HNO3.
D. H+, NO3-, HNO3, H2O.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 17: Trong dung dịch axit axetic (bỏ qua sự phân li của H2O) có những phần tử nào?
A. H+, CH3COO-.
B. H+, CH3COO-, H2O.
C. CH3COOH, H+, CH3COO-, H2O.
D. CH3COOH, CH3COO-, H+.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 19: Dãy nào dưới dây chỉ gồm chất điện li mạnh?
A. HBr, Na2S, Mg(OH)2, Na2CO3.
B. H2SO4, NaOH, NaCl, HF.
C. HNO3, H2SO4, KOH, K2SiO3.
D. Ca(OH)2, KOH, CH3COOH, NaCl.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 24: Dung dịch chất nào sau đây (có cùng nồng độ) dẫn điện tốt nhất?
A. K2SO4.
B. KOH.
C. NaCl.
D. KNO3
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