
Quiz về Số Oxi Hóa
Authored by Hạnh Đỗ
Chemistry
10th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của chlorine (Cl) trong KClO3 là
+3
+7
+6
+5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của oxygen (O) trong hợp chất F2O là
+1
+2
-1
-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của nitrogen (N) trong ion NH4+ là
-3
+3
+4
-4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng hoá học: 2Al + 3H2SO4 → Al2(SO4)3 + 3H2, mỗi nguyên tử Al đã
nhường 3 electron
nhận 3 electron
nhường 6 electron
nhận 6 electron
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng nào sau đây không phải là phản ứng oxi hóa - khử?
2Fe + 3Cl2 2FeCl3
Mg + H2SO4 MgSO4 + H2
3FeO + 10HNO3 3Fe(NO3)3 + NO + 5H2O
FeO + 2HCl FeCl2 + H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho phản ứng hóa học H2S + 4Cl2 + 4H2O H2SO4 + 8HCl, trong phản ứng này:
H2S là chất khử, H2O là chất oxi hóa
Cl2 là chất oxi hóa, H2O là chất khử
H2S là chất oxi hóa, Cl2 là chất khử
Cl2 là chất oxi hóa, H2S là chất khử
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình nhiệt hóa học ứng với phản ứng trên là
Cl2O(g) + 3F2O(g) 2ClF3(g) + 2O2(g); = - 394,10 kJ.
Cl2O(g) + 3F2O(g) 2ClF3(g) + 2O2(g); = + 394,10 kJ.
2ClF3(g) + 2O2(g) Cl2O(g) + 3F2O(g); = - 394,10 kJ.
2ClF3(g) + 2O2(g) Cl2O(g) + 3F2O(g); = + 394,10 kJ.
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