
Ôn tập học kì 1
Authored by Bách Nguyễn Minh
Chemistry
9th Grade
Used 1+ times

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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch bazo là
CO2
Na2O
SO2
P2O5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch axit là
P2O5
K2O
CuO
CaO
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình hóa học khi cho SO3 tác dụng với nước là
SO3 + H2O -> H2SO4
SO3 + H2O -> H2SO3
SO3 + H2O -> H2SO4 + H2S
SO3 + H2O -> HSO4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình hóa học khi cho Fe2O3 tác dụng với HCl là
Fe2O3 + 4HCl -> 2FeCl2 + 2H2O
Fe2O3 + 6HCl -> 2FeCl3 + 3H2O
Fe2O3 + 4HCl -> 2FeCl3 + 2H2
Fe2O3 + 4HCl -> 2FeCl2 + 2H2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dẫn hỗn hợp khí gồm CO2, CO lội qua dung dịch nước vôi trong (dư), khí thoát ra là
CO
CO2
Không có khí nào
CO và CO2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 2,24 lít CO2 (đktc) tác dụng với dung dịch Ba(OH)2 dư. Khối lượng chất kết tủa thu được là
19,7 gam.
19,5 gam.
19,3 gam.
19 gam.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxit tác dụng với nước tạo ra dung dịch làm quỳ tím hóa xanh là
CO2.
P2O5.
Na2O.
MgO.
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