Which reagent combination is industrially preferred for the reduction of nitrobenzene to aniline due — Amines Chemistry Question

💡 Solution & Explanation

Scrap iron ($Fe$) and $HCl$ are preferred industrially because the reduction forms $FeCl_2$, which subsequently hydrolyzes to release $HCl$ back into the mixture. Because $HCl$ is continuously regenerated, only a very small initial amount of acid is required.