Question

Why do amines have lower boiling point than alcohol?

Answer 1

Amines generally have lower boiling point than alcohol of comparable molar mass because amines have weaker hydrogen bonds than alcohols. The strong intermolecular forces give methanol a high boiling points. But the H-bonds in methylamine are weaker, because N is less electronegative than O.

Answer 2

Answer:

Amines have lower boiling points than alcohols because nitrogen is less electronegative than oxygen. As a result the N—H bond is less polar than the O—H bond, and the hydrogen bond in amines is weaker than the hydrogen bond in alcohols.