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Hydrogen peroxide acts both as an oxidis...

Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In which of the following cases `H_(2)O_(2)` acts as a reducing agent in acid medium ?

A

`MnO_(4)^(-)`

B

`Cr_(2)O_(7)^(2-)`

C

`SO_(3)^(2-)`

D

Kl

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • In which of the following reactions H_(2)O_(2) acts as a reducing agent?

    A
    I and II
    B
    III and IV
    C
    I and III
    D
    II and IV

  • In Which of the following reactions H_(2)O_(2) acts as a reducing agent

    A
    `PbO_(2)(s) +H_(2)O_(2)(aq) to PbO (s) +H_(2)O(l) +O_(2)(g) `
    B
    `Na_(2)SO_(3)(aq) +H_(2)O_(2)(aq) to Na_(2)SO_(4) (aq) +H_(2)O(l)`
    C
    `2Kl(aq)+H_(2)O_(2) (aq) to 2KOH (aq) +I_(2)(s)`
    D
    `KNO_(2)(aq)+H_(2)O_(2)(aq) to KNO_(3) (aq) +H_(2)O(l)`

  • In which of the following reactions, H_(2)O_(2) acts as a reducing agent?

    A
    `PbO_(2)(s)+H_(2)O_(2)(aq)toPbO(s)+H_(2)O(l)+O_(2)(g)`
    B
    `Na_(2)SO_(3)(aq)+H_(2)O_(2)(aq)toNa_(2)SO_(4)(aq)+H_(2)O(l)`
    C
    `2KI(aq)+H_(2)O_(2)(aq)to2KOH(aq)+I_(2)(s)`
    D
    `KNO_(2)(aq)+H_(2)O_(2)(aq)toKNO_(2)(aq)+H_(2)O(l)`