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Question
Chemistry
The number of Faradays required to produce one mole of water from a hydrogen-oxygen fuel cell containing aqueous alkali as electrolyte is
Q. The number of Faradays required to produce one mole of water from a hydrogen-oxygen fuel cell containing aqueous alkali as electrolyte is
2084
215
Electrochemistry
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A
1
B
3
C
2
D
4
Solution:
For
H
2
−
O
2
Fuel cell
2
H
2
+
4
O
H
−
→
4
H
2
O
+
4
e
−
2
H
2
+
O
2
→
2
H
2
O
(
2
m
o
l
e
)
O
2
+
2
H
2
O
+
4
e
−
→
4
O
H
−
required no. of faraday for two mole
H
2
O
=
4
required no. of faraday for one mole
H
2
O
=
2