Which of the following is not a disproportionation reaction? — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

In (A), $N$ in $NH_4^+$ is -3 and in $NO_3^-$ is +5. Both go to $N_2O$ where $N$ is +1. This is a **comproportionation** (specifically an intramolecular redox) reaction, not disproportionation. [1]