The benzene diazonium chloride needed for the sandmeyer reaction to produce aromatic halides is produced by diazotisation reaction that takes place at
0-50C
5-100C
10-150C
15-200C
HNO2 is stable at low temperature. Therefore the reaction is carried out between 0−5∘
This is Sandmeyer reaction.
Benzene diazonium chloride when reacts with hypophosphorus acid produces