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Question
Explain why propanol has higher boiling point than that of the hydrocarbon, butane?
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Solution
Propanol and butane have nearly the same molecular mass, but propanol has a higher boiling point because of intermolecular hydrogen bonding between its molecules. In butane, hydrogen bonding is not present due to the absence of the polar −OH group. The molecules of butane are connected by weaker van der Waals attraction forces.
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