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Q.

How many Faradays are required to reduce one mole of $M n O_{4}^{-}$ to $M n^{+ 2} ?$

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a

2

b

1

c

3

d

5

answer is D.

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Detailed Solution

$\underset{1 m o l e}{M n O_{4}^{-}} + \underset{5 m o l e}{5 e^{Θ}} \to M n^{+ 2}$

$5 m o l e e^{Θ} = 5$ Faradays

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