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Is it generally true that an alkene will have a boiling point less than the boiling...

Is it generally true that an alkene will have a boiling point less than the boiling point of the alcohol from which it is formed?
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Answer #1

The forces of attraction present between the molecules is determined by the polarity of the molecules which in deed is determined by the functional group present in the structure.

Greater the polarity of the molecule, greater is the forces of attraction between the atoms in the molecule and hence the boiling point of the molecule is also high.

Alcohol has strong intermolecular hydrogen bonding, dipole-dipole and dispersion forces. These attractions are stronger than the dipole interactions in the alkenes formed by the dehydration of alcohols.

Therefore, alkenes have a less boiling point than the boiling point of alcohol from which it is formed.

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