Question

Yield of chloro benzne obtained by reaction of phenol with pcl5 is less due to formaation of

Answer 1

Answer:

The POCl3 is formed in the first step consumes the phenol further by 3 moles to give mainly triphenyl phosphate. Thus if we use 4 moles of phenol we get only 1 mole of chloro benzene due to the formation of POCl3 in first step