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

Intermolecular hydrogen bonding in butan-1-ol

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Intermolecular hydrogen bonding in butanal

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Higher molecular mass of butan-1-ol

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Resonance shown by butanal

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Solution

The correct option is A Intermolecular hydrogen bonding in butan-1-ol
Butan-1-ol has intermolecular hydrogen bonding while Butanal has 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. Hence, the correct answer is option (a).

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Similar questions

Arrange the following compounds in increasing order of boiling point. Propan - 1 - ol, butan - 1 - ol, butan - 2 - ol, pentan - 1 - ol
(a) Propan-1-ol, butan-2-ol, butan - 1 - ol, pentan-1-o|
(b) Propan-1-ol, butan - 1 - ol, butan-2-ol, pentan-1-ol
(c) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol
(d) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

Q. Arrange the following compounds in increasing order of boiling points . Propan-1-ol , butan-1-ol , butan-2-ol, pentan-1-ol.

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Q. Explain: Propan-1-ol has higher boiling point than n-butane.

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