
Base. Thang pH
Authored by Sơn Nguyễn Thái
Chemistry
8th Grade
Used 11+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dãy oxide nào sau đây vừa tác dụng với nước, vừa tác dụng với dung dịch base?
CaO, CuO
CO, Na2O
CO2, N2O5
P2O5, MgO
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oxide vừa tan trong nước vừa hút ẩm là
SO2
CaO
Fe2O3
Al2O3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Có các oxide sau: CaO, SO2, CuO, N2O5, Fe2O3, CO2 . Những oxide tác dụng với dung dịch acid là
CaO, CuO, Fe2O3.
CaO,CO2,Fe2O3.
CaO,SO2, Fe2O3.
N2O5, ,N2O5 , CaO
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oxide nào sau đây làm vẩn đục dung dịch nước vôi trong dư?
CO
CuO
NO
CO2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chất nào sau đây tác dụng với nước tạo dung dịch làm phenolphtalein chuyển màu hồng?
Al2O3
Na2O
SO3
CuO
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Nhiệt phân Iron (III) hydroxide thu được sản phẩm là
Fe3O4.
Fe2O3.
FeO.
Không bị biến đổi màu sắc.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dung dịch nào sau đây không làm đổi màu quỳ tím?
H2SO4.
HCl.
Ca(OH)2.
MgCl2.
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