HARDMCQ SINGLEJEE Mains 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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