Question

Class XII problem

why p-dichlorobenzene has higher boiling point & lower solubility than ortho & meta dichlorobenzene?

Answer 1

p-dichlorobenzene shows intermolecular hydrogen bonding due to which its molecules are strongly attracted to each other. Thus its boiling point increases. It has lower solubility because to be soluble it has to break its hydrogen bonds and form new hydrogen bonds with water which is not feasible.