
chủ đề acid
Authored by Khanh Nguyễn
Chemistry
1st Grade
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CuO + HCl --> A + H2O. A là chất nào sau đây
CuCl2
Cu(OH)2
Cu
không phản ứng
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
các kim loại nào sau đây không phản ứng với acid H2SO4 loãng
Cu và Al
Cu, Ag và Au
Cu và Mg
Cu, Ag và Fe
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cu + H2SO4 đặc, nóng thu được sản phẩm là
CuSO4 + H2O + SO2
CuSO4 + H2
CuSO4 + H2O
không phản ứng
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
khi cho HCl tác dụng với Fe2O3 thu được muối nào
FeCl2
FeCl
FeCl3
FeCl2 và FeCl3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al(OH)3 + H2SO4 thu được sản phẩm là
Al2(SO4)3
Al2(SO4)3 + H2
không phản ứng
Al2(SO4)3 + H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
chất nào sau đây thường được dùng để nhận biết dd H2SO4 và muối sulfate(gốc SO4)?
dd HCl
quỳ tím
dd NaOH
dd BaCl2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
để phân biệt dd HCl, NaOH và NaCl ta dùng thuốc thử
Fe
Al2O3
quỳ tím
H2SO4
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