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In an electrolytic cell, one litre of a ...

In an electrolytic cell, one litre of a 1 M aqueous solution of `MnO_(4)^(-)` is reduced at the cathode the quantity of electricity required so that the final solution is `0.1M MnO_(4)^(2-)` will be

A

0.1F

B

1F

C

10F

D

0.01F

Text Solution

Verified by Experts

The correct Answer is:
A
`MnO_(4)^(-)+e^(-)rarrMnO_(4)^(2-)`
To reduce 1 mol of `MnO_(4)^(-)` to `MnO_(4)^(2-)` 1F is required As final solution contains 0.1 M `MnO_(4)^(-)` to `MnO_(4)^(2-)` electricity required =0.1F
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