The electrolytic reduction of nitrobenzene in strongly acidic medium produces: azobenzene, aniline, p-aminophenol, azoxy benzene

The electrolytic reduction of nitrobenzene in strongly acidic medium produces phenylhydroxylamine which rearranges to p-Aminophenol. In weakly acidic medium, aniline is obtained whereas in alkaline medium, various mono and di-nuclear reduction products (such as nitrosobenzene, phenylhydroxylamine, azoxybenzene, azobenzene and hydrazobenzene) are obtained.