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When manganous salt is fused with a mixt...

When manganous salt is fused with a mixture of `KNO_3` and solid NaOH, the oxidation number of Mn changes from +2 to + 4 + 3 + 6 + 7

A

`+4`

B

`+3`

C

`+6`

D

`+7`

Text Solution

Verified by Experts

The correct Answer is:
C
`Mn^(2+) +2 OH^(-) +(O) underset("of manganous salt")overset("alkalineox ")to Mn O_(2) + H_ 2O`
` MnO_(2) + 2NaOH + underset(("From" KMO_3))((O ))to Na_2 overset(+6)(MnO_(4)) +H_2 O`
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