
Phản ứng oxi hóa - khử
Authored by THPT Trung
Chemistry
10th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Chất khử là chất
Cho electron
Nhận electron
Giảm số oxi hóa sau phản ứng
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Chất oxi hóa là chất
Cho electron
Tăng số oxi hóa sau phản ứng
Bị oxi hóa
Giảm số oxi hóa sau phản ứng
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Quá trình oxi hóa làm
Tăng số oxi hóa
Giảm số oxi hóa
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Mg + 2HCl → MgCl 2 + H 2
Chất khử trong phản ứng trên là
Mg.
HCl.
MgCl2
H2.
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Chất oxi hóa trong phản ứng?
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
Ag.
AgNO3 .
Cu.
Cu(NO3)2
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cho quá trình : Fe2+ → Fe3+ + 1e
Đây là quá trình:
oxi hóa.
khử .
nhận proton.
giảm số oxi hóa
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cho phản ứng: Ca +Cl 2 → CaCl 2 .
Kết luận nào sau đây đúng?
Mỗi nguyên tử Ca nhận 2e.
Mỗi nguyên tử Cl nhận 2e.
Mỗi phân tử Cl 2 nhường 2e.
Mỗi nguyên tử Ca nhường 2e.
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