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Which of the following reaction are disp...

Which of the following reaction are disproportionstion reaction and comproportionaton reactions ?
`3K_(2)MnO+4H_(2)Oto2KMnO_(4)+MnO_(2)+4KOH`

Text Solution

Verified by Experts

`overset(+6)(3K_(2)MnO_(4))+2H_(2)Otooverset(+7)(2KMnO_(4))+overset(+4)(Mn)O_(2)+KOH`
The oxidation number of Mn un `K_(2)MnO_(4)`=+6. On the other hand ,the oxidation number of Mn in the products `KMnO_(4)and MnO_(2)`are +7 and +4 respectively .Therefore, in the reaction `K_(2) MnO_(4)`is oxidised and reduced at the same time forming `KMnO_(4)` and MnO_(2)`.Thus is at disproportionation reaction.
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