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Question
Arrange the following in the increasing order of their boiling points:
CH3CH2OH,CH3COCH3,CH3COOH
Arrange the following in the increasing order of their boiling points:
CH3CH2OH,CH3COCH3,CH3COOH
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Solution
The correct option is A CH3−CO−CH3<CH3−CH2−OH<CH3−COOH
CH3−CO−CH3<CH3−CH2−OH<CH3−COOH
Boiling point depends on intermolecular hydrogen bonding.
Thus alcohols tend to have a higher boiling point than ketones because they have a OH group, unlike carbonyls.
Carboxylic acids have higher boiling points than aldehydes, ketones, and given alcohol of comparable molecular mass. This is because of formation of stronger intermolecular H-bonding than alcohol.
CH3−CO−CH3<CH3−CH2−OH<CH3−COOH
Boiling point depends on intermolecular hydrogen bonding.
Thus alcohols tend to have a higher boiling point than ketones because they have a OH group, unlike carbonyls.
Carboxylic acids have higher boiling points than aldehydes, ketones, and given alcohol of comparable molecular mass. This is because of formation of stronger intermolecular H-bonding than alcohol.
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