Which one of the following does not get oxidized by bromine water? — Electrochemistry Chemistry Question

💡 Solution & Explanation

Bromine water is a moderate oxidizing agent ($E^\circ \approx 1.09$ V). The oxidation of Mn2+ to MnO4– requires a very strong oxidizing agent ($E^\circ \approx 1.51$ V). Bromine is not strong enough to oxidize Mn2+ to permanganate.