1.

In acid solution, the reaction MnO_(4)^(-) rarr Mn^(2+) involves

Answer»

OXIDATION by 3 ELECTRONS
Reduction by 3 electrons
Oxidation by 5 electrons
Reduction by 5 electrons

Solution :`MnO_(4)^(-) rarr Mn^(2+)`. In this REACTION `5E^(-)` are needed for the reduction of `Mn^(2+)` as :
`MnO_(4)^(-)+5e^(-) rarr Mn^(2+)`.


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