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Hydrogen peroxide in its reaction with K...

Hydrogen peroxide in its reaction with `KIO_(4)` and `NH_(4)OH` respectively, is acting as a

A

reducing agent,oxidising agent

B

reducing agent, reducing agent

C

oxidising agent,oxidising agent

D

oxidising agent, reducing agent

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(2)O_(2)` reacts with `KIO_(4)` in the following manner:
`overset(+7)(KIO_(4))+H_(2)O_(2)rArr overset(+5)(KIO_(3))+H_(2)O+O_(2)`
on reaction of `KIO_(4)` with `H_(2)O_(2)`, oxidation state of `I` varies from `+7` to `+5` i.e., decreases. Thus `KIO_(4)` get reduced hence,`H_(2)O_(2)` is reducing agent here.
`H_(2)O_(2)` reacts with `NH_(2)OH` in the following manner.
`overset(-1)(NH_(2)OH)+H_(2)O_(2)rArr overset(+3)(N_(2)O_(3))+H_(2)O`
In this reaction, oxidation state of `N` varies from `-1` to +3 i.e., increases, hence `H_(2)O_(2)` is acting on an oxidising agent here.
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