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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)` green

B

`KMnO_(4)` purple

C

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

D

`MN_(3)O_(4)` black

Text Solution

Verified by Experts

The correct Answer is:
A
When `MNO_(2)` is fused with KOH in the presence of oxidising agent such as potassium nitrate `(KNO_(3))`, a green coloured compound, potassium manganate, `(K_(2) MNO_(4))` is formed.
`MnO_(2) + 2KOH + KNO_(3) to underset(("Green"))(K_(2) MnO_(4)) + KNO_(2) +H_(2)O`
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