
Тест. ОВР
Authored by Диана Скрыльникова
Chemistry
11th Grade
Used 12+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
1. К окислительно-восстановительным реакциям относятся :
CaO+H2O = Ca(OH)2
2Zn + O2 = 2ZnO
4С + HNO3= СО2 + 4NO2 + 2H2O
Cu(OH)2 + 2HCl = CuCl2 + 2H2O
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Выберите схемы превращений, в которых
углерод является восстановителем:
С0 → С+2
С+2 → С-2
С+4 → С-4
С-4 → С0
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Выберите уравнения реакций, в которых азот является окислителем:
6Li + N2 = 2Li3N
NH3 + HNO3= NH4NO3
4С + HNO3= СО2 + 4NO2 + 2H2O
N2 + O2 = 2NO
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
в каком соединении марганец имеет степень окисления +4
KMnO4
K2MnO4
MnO2
MnSO4
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Установите степень окисления окислителя в реакции Fe2O3 + 3H2 → 2Fe +3H2O
0
+2
+3
+1
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Установите степень окисления восстановителя в реакции Cr + 2HCl → CrCl2 + H2
+1
0
+2
+3
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
выберите процесс, который соответствует окислению
Cl+3 + 4e →Cl-
2Fe+2 -2e →2Fe+3
2Cr+6 +6e →2Cr+3
N20 +6e →2N-3
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