Which of the following chemical reactions represents a disproportionation reaction? — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Disproportionation occurs when an element in a specific intermediate oxidation state is simultaneously oxidized and reduced. Here, $Cu^+$ (+1) splits into oxidized $Cu^{2+}$ (+2) and reduced $Cu$ (0). Option D is decomposition but $Mn$ (+7) only reduces.