`FeSO_(4)`is oxidised and `KMnO_(4)` is reduced. `2KMnO_(4) + 3H_(2) SO_(4) rarr K_(2) SO_(4) + 2MNSO_(4)` `[2FeSO_(4) + H_(2)SO_(4) rarr Fe_(2) (SO_(4))_(3) + 2H] xx 5` `[2H + [O] rarr H_(2) O] xx 5` `bar(2KMnO_(4) + 8H_(2) SO_(4) + 10 FeSO_(4) rarr)` `K_(2) SO_(4) + 2MnSO_(4) + 5Fe_(2) (SO_(4))_(3) + 8H_(2)O` In this reaction, oxidation state of `Mn` is changing from `+ 7` to `+ 2` while oxidation state of `Fe` is changing from `+2` to `+3`.
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