While hydrogen peroxide is primarily an oxidizing agent, it acts as a **reducing agent** when confro — Hydrogen Chemistry Question
Question
While hydrogen peroxide is primarily an oxidizing agent, it acts as a **reducing agent** when confronted with powerful oxidizers in acidic media. When $H_2O_2$ is added to an acidified solution of Potassium Permanganate ($KMnO_4$), what are the visible result and the stoichiometric fate of the $H_2O_2$?
Answer: B
💡 Solution & Explanation
In acidic medium, powerful $KMnO_4$ forces $H_2O_2$ to act as a reducing agent. The intensely purple $MnO_4^-$ ion is reduced to the colourless $Mn^{2+}$ ion, completely decolourising the solution. Simultaneously, $H_2O_2$ is oxidized, bubbling off as $O_2$ gas.
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