To completely reduce one mole of nitrobenzene () to aniline () using an active metal and acid mixture (e.g., ), how many moles of nascent hydrogen are theoretically required according to the balanced

Question

To completely reduce one mole of nitrobenzene ($C_6H_5NO_2$) to aniline ($C_6H_5NH_2$) using an active metal and acid mixture (e.g., $Sn/HCl$), how many moles of nascent hydrogen $[H]$ are theoretically required according to the balanced stoichiometry?

Prashant Kotian · Accepted Answer

Correct answer: 6. The overall reduction of nitrobenzene to aniline requires the complete removal of 2 oxygen atoms (as 2 molecules of water, consuming 4 hydrogens) and the addition of 2 hydrogen atoms to the nitrogen atom to form the amine. Therefore, moles of nascent hydrogen are required. The stoichiometric reaction is: .

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