Question

Why is bp higher in unbranched alkyl halides than branched alkyl halides?

Answer 1

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Haloalkanes generally have a boiling point that is higher than the alkane they are derived from. ... For the same alkyl group, the boiling point of haloalkanes decreases in the order RI > RBr > RCl > RF.This is due to the increase in van der Waals forces when the size and mass of the halogen atom increases.

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Answer 2

Answer:

The simple explanation is that weak intermolecular forces (the forces that make something condense to a liquid when things are cold enough) depend on the surface area (as well as many other things). But in the case of relatively similar non-polar isomers (where weak intermolecular forces are the dominant forces), the larger surface area will lead to the large force and hence the highest boilling point.

Explanation:

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