Question

How will you obtain bromobenzene from benzene diazonium chloride?

Answer 1

Bromobenzene is prepared by heating benzenediazonium chloride with copper powder and hydrobromic acid (HBr). This reaction replaces the diazonium group \[\ce{(-N^+_2Cl^-)}\] with a bromine atom, releasing nitrogen gas (N₂). It is an example of the Sandmeyer reaction.