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When MnO(2) fused with KOH, a coloured c...

When `MnO_(2)` fused with `KOH`, a coloured compound is formed . The product and its colour is:

A

`K_(2)MnO_(4)`, purple green

B

`KMnO_(4)`, purple

C

`Mn_(2)O_(3)`, borwn

D

`Mn_(3)O_(4)`, black.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `MnO_(2)` is oxidised to `K_(2)MnO_(4)` in alkaline medium to acquire a stable oxidation state of + 6.
`2MnO_(2)+4KOH+O_(2) ""^(3//4®)" "2K_(2)MnO_(4)+H_(2)O` The colour of the solution is light pruple green.
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