Solution:
- The higher boiling points of amides is because of Intermolecular hydrogen bonding
- Due to intermolecular hydrogen bonding, they have high boiling point than amine and amongst amide, the order of boiling points are Primary > Sec > Tertiary
- This is because of alkyl group by which, the carbonyl oxygen does not form the hydrogen bond (with other molecules)
- So, primary amide has high boiling point and tertiary amides do not have to form a bond with other amides and have least B.P.
