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Which one of the following has the minimum boiling point?
(1) n-Butane
(2) 1-Butyne
(3) 1-Butene
(4) Isobutene

Harshit Singh , 5 Years ago
Grade 12th pass
anser 1 Answers
Pawan Prajapati
Answer ::

Among the isomeric alkanes, the normal isomer has a higher boiling point than the branched-chain isomer. The higher the branching of the chain, the lower is the boiling point. The n-alkanes have more surface area in comparison to branched-chain isomers. So, intermolecular forces are weaker in branched-chain isomers. Hence they have lower boiling points in comparison to straight-chain isomers.
Hence option (4) is the answer.


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Last Activity: 5 Years ago
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