HARDMCQ SINGLENEET ChemistryInorganic ChemistryCarboxylic Acids and DerivativesAchiever Section

Identify the correct order of boiling points of the following compounds

A.A > B > C

B.C > A > B✓ Correct

C.A > C > B

D.C > B > A

Explanation

N-butanol has the alcohol group and is involved in the extensive intermolecular H-bonding which makes the boiling point higher than butanal. Butanal has the aldehyde group and is polar due to which intermolecular dipole-dipole attraction develops. Carboxylic group also develops the hydrogen bonding and has more association than alcohol group Thus, the order is given as- 3 2 2 3 2 2 2 3 2 2 CH CH CH COOH > CH CH CH CH OH > CH CH CH CHO Thus, the correct option is (b) C>A>B

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