1.

While Fe^(3+) is stable, Mn^(2+) is not stable in acid solution because.

Answer»

`O_(2)` OXIDES `MN^(2+)` to `Mn^(3+)`
`O_(2) ` OXIDISES both `Mn^(2+)` to `Mn^(3+)` and `Fe^(2+)` to `Fe^(3+)`
`FE^(3+)` oxidizes `H_(2)O` to `O_(2)`
`Mn^(3+)` oxidizes `H_(2)O` to `O_(2)`

Solution :Reaction of `M N^(3+)` with `H_2O` is sponteneous.


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