In which of the following reaction the hydrogen peroxide acts as a reducing agent ? (A) PbS + 4H2O2 PbSO4 + 4H2O (B) 2Fe2+ + H2O2 2Fe3+ + 2OH– (C) HOCl + H2O2 H3O+ + Cl– + O2 (D) Mn2+ + H2O2 Mn4+ + 2O

Question

In which of the following reaction the hydrogen peroxide acts as a reducing agent ?

(A) PbS + 4H2O2 PbSO4 + 4H2O
(B) 2Fe2+ + H2O2 2Fe3+ + 2OH–
(C) HOCl + H2O2 H3O+ + Cl– + O2
(D) Mn2+ + H2O2 Mn4+ + 2OH–

Prashant Kotian · Accepted Answer

Correct answer: C. HOCl + H2O2  H3O+ + Cl– + O2 In this reaction H2O2 reduce HOCl to Cl– and it self get oxidised to O2.

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