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Question

Give reasons for the following:
The boiling points alkanes decrease with branching.

Solution
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With increase in the branching, the surface area of the molecule decreases and vander waals forces of attraction decreases which can be overcome at a relatively lower temperature. Hence, the boiling point of an alkane chain decreased with an increase in branching.

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Give reasons for the following:
The boiling points alkanes decrease with branching.
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