Question

Explain the boiling point of alcohols increases with molecular mass.

Answer 1

The boiling point of alcohols increases with molecular mass. Van der Waals forces of attraction increase with an increase in molecular mass. Stronger are the van der Waals forces of attraction, higher is the boiling point.

Alcohol	Boiling point $\left(K\right)$
Methanol	338
Ethanol	351
Propanol	370
Pentanol	411
Hexanol	430