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Question
Chemistry
The charge required for the reduction of 1 mol of MnO4- to MnO2 is
Q. The charge required for the reduction of
1
mol of
M
n
O
4
−
to
M
n
O
2
is
3357
195
KCET
KCET 2018
Electrochemistry
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A
1 F
21%
B
3 F
52%
C
5 F
18%
D
6 F
9%
Solution:
M
n
O
4
−
+
2
H
2
O
+
3
e
−
⟶
M
n
O
2
+
4
O
H
−
In the above reduction requires flow of
3
moles of electrons. So it required
3
F
charge.