
Kim Ngân
Quiz
•
Chemistry
•
9th - 12th Grade
•
Easy
Ngân Kim
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch axit photphoric có chứa các ion (không kể ion H+ và ion OH– của nước)
H+, PO43-.
PO43-, H2PO4-, PO43-.
H+, HPO42-, PO43-, H2PO4-, OH-.
H+, H2PO4-, HPO42-, PO43-.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
NH3 thể hiện tính khử trong phản ứng nào sau đây?
AlCl3 + 3NH3 + 3H2O ⎯⎯→ Al(OH)3↓ + 3NH4Cl.
NH3 + HCl ⎯⎯→ NH4Cl.
2NH3 + H2SO4 ⎯⎯→ (NH4)2SO4.
4NH3 + 3O2 t 2N2 + 6H2O.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sản phẩm của phản ứng nhiệt phân KNO3 là
K2O, NO2 và O2.
K, NO2, O2.
KNO2, NO2 và O2.
KNO2 và O2.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4: Cho phản ứng aFe + bHNO3 ⎯⎯→ cFe(NO3)3 + dNO2 + eH2O. Các hệ số a, b, c, d, e là những số nguyên đơn giản nhất. Tổng (a+b) bằng
7
5
4
6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình nhiệt phân muối amoni nào sau đây sai?
NH4HCO3 t NH3 + H2O + CO2.
NH4Cl t NH3 + HCl.
NH4NO3 t NH3 + HNO3.
NH4NO2 t N2+H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit nitric đặc nguội có thể tác dụng được với dãy chất nào sau đây:
Al, Al2O3, Mg, Na2CO3.
Cu, Al2O3, Zn(OH)2, CaCO3.
Fe, CuO, Zn, Fe(OH)3.
S, ZnO, Mg, Au.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy gồm tất cả các chất khi tác dụng với HNO3 thì HNO3 chỉ thể hiện tính oxi
hoá là
Mg, H2S, S, Fe3O4, Fe(OH)2.
Al, FeCO3, HI, CaO, FeO.
Cu, C, Fe2O3, Fe(OH)2, SO2.
Na2SO3, P, CuO, CaCO3, Ag.
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