MHT CET Chemistry question

Alcohols boils at a higher temperature compared to alkanes and other compounds of similar molecular weights because

(A)The presence of hydrogen bond
(B)The presence of many isomers
(C)The decrease of volatility
(D)The presence of hydrogen bond, which cause association of the molecules, raises the molecular weight and reduces the volatilityCorrect

Answer: (D)

Solution

Intermolecular hydrogen bonding associates alcohol molecules into larger units (higher effective molecular mass), which reduces volatility and raises the boiling

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Question ID VK-078932