question_answer 46)

Why is there a large difference in the boiling points of butanal and butan-1-ol ?

Answer:

                    Butan-1-ol contains an O-H group and hence undergoes intermolecular H-bonding.   Therefore, its b.p. is much higher than that of butanal  which does not contain an O-H group and hence does not undergo H-bonding. Instead it has only weak dipole-dipole interactions.