Electrolysis of a solution of `MnSO_(4)` in aqueous sulphuric acid is a method
Channel: Doubtnut
Date: 2020-04-19

Electrolysis of a solution of `MnSO_(4)` in aqueous sulphuric acid is a method for the preparation of `MnO_(2)`. Passing a current of 27 A for 24 hours gives 1 kg of `MnO_(2)`. The current efficiency in this process is: