Electrolytic reduction of nitrobenzene in weakly acidic medium givesN-PhenylhydroxylamineNitrosobenzeneAnilinep-Hydroxyaniline

The electrolytic reduction of nitrobenzene in a weakly acidic medium primarily gives Aniline. Here's a step-by-step explanation:

1. Nitrobenzene (C6H5NO2) is subjected to electrolytic reduction, which means it is reduced by gaining electrons. This process is carried out in a weakly acidic medium.

2. During the reduction, the nitro group (NO2) in nitrobenzene is reduced to an amino group (NH2), resulting in the formation of aniline (C6H5NH2).

3. The reaction can be represented as follows: C6H5NO2 + 6[H] → C6H5NH2 + 2H2O. Here, [H] represents the hydrogen ions provided by the acidic medium and the electrons gained during reduction.

4. Therefore, the primary product of the electrolytic reduction of nitrobenzene in a weakly acidic medium is aniline.