
степень окисления 9 кл
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Aida Jumabekova
Used 1+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая степень окисления у атома кислорода в соединении H2O2 (перекись водорода)?
-1
-2
+1
+2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Определите степень окисления углерода в молекуле CO2 (углекислый газ).
-2
-4
+4
+3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая степень окисления у хлора в соединении NaClO3 (хлорноватистая кислота)?
+4
+6
+4
+5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В каком соединении железо имеет степень окисления +3?
FeSO4
Fe2O3
FeO
FeCO3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова степень окисления серы в соединении H2SO4 (серная кислота)?
+1
+2
+4
+6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое вещество является окислителем в реакции: 2H2+O2→2H2O
H2
O2
H2O
оба являются окислителями
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое вещество будет восстановителем в реакции: Zn+CuSO4→ZnSO4+Cu
Zn
Cu
CuSO4
ZnSO4
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