Question

There is a large difference in the boiling points of butanal and butan-$1$-ol due to

• A. intermolecular hydrogen bonding in butan-$1$-ol
• B. intramolecular hydrogen bonding in butanal
• C. higher molecular mass of butan-$1$ -ol
• D. resonance shown by butanal

Answer 1

Answer: (A)

Butan-1-ol has intermolecular hydrogen binding while Butanal no such advantage so there is a large difference in boiling point.
Butan-1-ol has one hydrogen attached to oxygen so it can form hydrogen bond while Butanal cann't.