Reacții redox

Quiz
•
Chemistry
•
12th Grade
•
Hard
NICULAE ANCA
Used 15+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cedarea de electroni în reacțiile cu transfer de electroni se numește:
redox
oxidare
reducere
număr de oxidare
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În combinații numărul de oxidare al oxigenului este:
0
+1
+2
-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În apa oxigenată, NO al oxigenului este:
0
+1
-1
-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În Ca(OH)2, Ca are NO:
+1
-1
+2
-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În HClO3, Cl are NO:
+1
+2
-2
+5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Într-o reacție redox transferul de electroni este de la:
oxidant la oxidant
reducător la reducător
oxidant la reducător
reducător la oxidant
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Conversia energiei chimice în energie electrică are loc în:
Eprubetă
Celula de electroliză
Pile electrice
Centrale atomoelectrice
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În reacția redox:
Zn + Pb(NO3)2 -> Pb + Zn(NO3)2
Zn + Pb+2 -> Pb + Zn+2
numărul de cupluri redox este:
1
2
3
4
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În reacția:
C + 2 H2 --> CH4
NO al H2 este:
0
+1
-1
+4
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