1.

Which of the following reactions are disproportionation reactions ?

Answer»

`Cu^(+) rarr Cu^(2+) + Cu`
`3MnO_(4)^(-) + 4H^(+) rarr 2MnO_(4)^(-) + MnO_(2)+ 2H_(2)O`
`2KMnO_(4) +rarr K_(2)MnO_(4) + 2H_(2)O`
`2MnO_(4)^(-) + 3Mn^(2+) + 2H_(2)O rarr 5MnO_(2) + 4H^(+)`

Solution :In (i) , `Cu^(+)` is OXIDIZED as well asreduced. In (ii) , `MnO_(4)^(-)` ions are oxidised as well as REDUCED.


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