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Hydrogen perioxde acts both as an oxidis...

Hydrogen perioxde acts both as an oxidising agent and as reducing agent in alkaline solution towards certain first row transition metal ions. Iiustrate both these properties of `H_(2)O_(2)` using chemical equation.

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`H_(2)O_(2)` as oxidising agent in alkaline medium.
It oxidises manganese dioxide in the presence of an alkali
`MnSO_(4)+H_(2)O_(2)_2NaOH to MnO_(2)+Na_(2)SO_(4)+2H_(2)O`
`Mn^(2+)+H_(2)O_(2)+2OH^(-) to MnO_(2)+2H_(2)O`
`H_(2)O_(2)` as reducing agent in alkaline medium
It reduces potassium ferrricyanide to potassium ferrocyanide in the presence of an alkali
`Mn^(2+)+H_(2)O_(2)+2OH^(-) to MnO_(2)+2H_(2)O`
`2[Fe(CN)_(6)]^(3-)+2OH^(-)+H_(2)O_(2) to 2[Fe(CN)_(6)]^(4-)+O_(2)`
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