Which of the following compounds has highest boiling point?

Propan -1-ol

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n - butane

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Chloroethane

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Propanal

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Solution

The correct option is A Propan -1-ol
Those with strong intermolecular forces will have high melting and boiling points. The hydrogen bond is stronger intermolecular forces.

As branching increases boiling point decreases. Propan-1-ol has highest boiling point because propan-1-ol contain H-bonding in their structure.

So answer option A is correct.

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