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Question
Chemistry
How many Faradays of electricity are required for the given reaction to occur ? MnO4- arrow Mn2+
Q. How many Faradays of electricity are required for the given reaction to occur ?
M
n
O
4
−
→
M
n
2
+
2414
235
AIIMS
AIIMS 2016
Electrochemistry
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A
5 F
40%
B
3 F
33%
C
1 F
21%
D
7 F
6%
Solution:
+
7
M
n
O
4
−
→
M
n
2
+
The reaction can be written as :
M
n
O
4
−
→
M
n
2
+
Hence,
5
moles of electrons or
5
F
of electricity are required for the given reaction.