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Pyrolusite is used to prepare potassium ...

Pyrolusite is used to prepare potassium permanganate `MnO_(2)overset(X)toMnO_(4)^(2)overset(Y)toMnO_(4)`X and Y are

A

fuse with KOH air and electrolytic oxidation

B

fuse with KOH `KNO_3` and electrolytic oxidation

C

fuse with conc. `HNO_3` air and electrolytic reduction

D

dissolve in `H_2O` and oxidation

Text Solution

Verified by Experts

The correct Answer is:
A,B
Fuse with KOH in presence of air or oxidising agents like `KNO_3, KClO_3` etc.
`2MnO_2 +4KOH+O_2overset("fuse")to2K_2MnO_4+2H_2O`
`MnO_4^(2-)overset("electrolytic solution")toMnO_4^(-)+e^-`
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