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Number of coulombs required to reduce on...

Number of coulombs required to reduce on e mole of `MnO_(4)^(-)` to `Mn^(2+)`

A

96500 coulomb

B

`2xx96500` coulomb

C

`5x96500` columb

D

`3xx96500` coulomb.

Text Solution

Verified by Experts

The correct Answer is:
c
`overset(+7)MnO_(4)^(-)+5e^(-)rarrMn^(2)+`
1mol 5 mol 8
`therefore ` 1 mole of `MnO_(4)^(-)` needs 5 mol of electrons i.e., 5F Faraday i.e., `5xx96 500` coulombs.
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