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When a mananous salt is fused with a mix...

When a mananous salt is fused with a mixture of `KNO_(3)` and and solid NaOH, the oxidation number of Mn change from +2 to:

A

`+4`

B

`+3`

C

`+6`

D

`+7)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Mn^(2+) + 2OH^(-) + (O) underset("of manganous salt")overset("Alkaline ox.")(rarr) MnO_(2)+ H_(2)O`
`MnO_(2)+ 2NaOH + underset("(From KNO_(3))")(O) rarrNa_(2)overset(+6)(Mn)O_(4)+H_(2)O`
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