The benzene diazonium chloride needed for the sandmeyer reaction to produce aromatic halides is produced by diazotisation reaction that takes place at
0−5∘C
5−10∘C
10−15∘C
15−20∘C
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