MHT CET 2024 Chemistry question

Which among the following lowest boiling point ?

(A)ChloromethaneCorrect
(B)Bromomethane
(C)Dibromomethane
(D)Tribromomethane

Answer: (A)

Solution

The boiling points of haloalkanes depend on the strength of the van der Waals (London dispersion and dipole-dipole) forces, which increase with molecular mass, size and the number of halogen atoms. Chloromethane has the smallest molecular mass (50.5 u) and one light halogen, so it has the weakest

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Question ID VK-096831