The number of moles of hydrogen atoms required to convert one mole of nitrobenzene to hydrazobenzene is

To convert one mole of nitrobenzene to hydrazobenzene, the number of moles of hydrogen atoms required is 6 moles.

Explanation:

The conversion reaction involves reducing the nitro group (-NO2) in nitrobenzene (C6H5NO2) to a hydrazo group (-NH-NH-) in hydrazobenzene (C6H5-NH-NH-C6H5).

The reduction process can be summarized as:

Nitrobenzene (C6H5NO2) → Hydrazobenzene (C6H5-NH-NH-C6H5)

During this reduction:

• Each nitro group is reduced to hydrazo group by addition of hydrogen atoms.
• The conversion involves 6 hydrogen atoms per mole of nitrobenzene.

Thus, 6 moles of hydrogen atoms are needed per mole of nitrobenzene to form hydrazobenzene.