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Identify the correct order of boiling po...

Identify the correct order of boiling points of the following compounds.
`underset((A)) (CH_(3) CH_(2) CH_(2) CH_(2) OH),underset((B)) (CH_(3) CH_(2) CH_(2) CHO), underset((C)) (CH_(3) CH_(2) CH_(2) COOH`.

A

`(A) gt (B) gt ( C)`

B

`( C) gt (A) gt (B)`

C

`(A) gt ( C) gt (B)`

D

`( C) gt (B) gt (A)`

Text Solution

Verified by Experts

The correct Answer is:
B
Acid `( C)` forms dimer due to intramolecular `H-`bonding.
Alcohol `(A)` forms intermolecular `H-`bonding
`H-`bonding in `(C )` is stronger than in `(A)`.
Aldehyde `(B)` has dipole-dipole interaction.
So the order of boiling points is : `(C) gt (A) gt (B)`.
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