Carboxylic Acids and their Derivatives 2 Question 19
19. Statement I $p$-hydroxybenzoic acid has a lower boiling point than $o$-hydroxybenzoic acid.
Statement II $o$-hydroxybenzoic acid has intramolecular hydrogen bonding.
(2007, 3M)
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Answer:
Correct Answer: 19. (a)
Solution:
- $p$-hydroxy benzoic acid has higher boiling point than $o$-hydroxy benzoic acid because former prefers intermolecular $\mathrm{H}$-bonding while the latter prefer intramolecular $\mathrm{H}$-bonding. intermolecular $\mathrm{H}$-bonding
