1.

How many faradays of electricity are required for the following reaction to occur MnO4^- to Mn^(2+)

Answer»

`5F`
`3F`
`1F`
`7F`

Solution :`7MnO_(4)^(-) + 5e^(-) to Mn^(2+) + 4H_2O`
5 MOLES of ELECTRONS i.e, 5F CHARGE is required.


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