Q. In which of the following reactions, $H_{2}O_{2}$ is acting as a reducing agent?
A) $SO_{2} + H_{2}O_{2} \rightarrow H_{2}SO_{4}$
B) $2KI + H_{2}O_{2} \rightarrow 2KOH + I_{2}$
C) $PbS + 4H_{2}O_{2} \rightarrow PbSO_{4} + 4H_{2}O$
D) $AgO_{2} + H_{2}O_{2} \rightarrow 2Ag + H_{2}O + O_{2}$
Explanation
(d)
$H_{2}O_{2}$ is acting as reducing agent in the reaction that involve increase in the oxidation state of oxygen $H_{2}O_{2}$ (i.e., in which $H_{2}O_{2}$ is being oxidised).
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.