Question

In which of the following reactions, H₂O₂ acts as a reducing
agent?
(a) 2KI + H₂O₂ → 2KOH + I₂
(b) 2FeSO ₄ + H₂SO₄ + H₂O₂ → Fe₂ (SO₄ )₃ + 2H₂O
(c) PbS + 4H₂O₂ → PbSO ₄ + 4H₂O
(d) Ag₂O + H₂O₂ → 2Ag + H₂O + O₂

Answer 1

In the reaction Ag₂O + H₂O₂ → 2Ag + H₂O + O₂  Hydrogen peroxide (H2O2) acts as reducing agent.

Option (D) is correct.

Explanation:

The reaction is:

Ag₂O + H₂O₂          →     2Ag  + H₂O + O₂

         (Oxidation)                               (Reduction)

In this reaction H2O2 acts as a reducing agent.

The reducing agent is a substance or specie that oxidize itself and brings reduction to another substance.

In the above reaction H2O2 loses it electrons and reduces the oxygen molecule.

Thus in the reaction Ag₂O + H₂O₂ → 2Ag + H₂O + O₂  Hydrogen peroxide (H2O2) acts as reducing agent.

Also learn more

Zinc oxide reacts with carbon on heating to form zinc metal and carbon monoxide. Write the balanced chemical equation for this reaction. Name the substance oxidised and the substance reduced. ?

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