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Haloalkanes And Haloarenes

Question
CBSEENCH12010064

Give reasons:

n-Butyl bromide has higher boiling point than t-butyl bromide.

Solution

The boiling point of n-butyl bromide is higher than that of t-butyl bromide because n-butyl bromide is a straight chain molecule having larger surface area and therefore, has stronger intermolecular forces. On the other hand, t-butyl bromide is branched molecule, so it has a smaller surface area. Hence, it has weaker intermolecular force. Thus, n- Butyl bromide has higher boiling point than t-butyl bromide.