Assertion : p–hydroxybenzoic acid has a lower boiling point than o–hydroxybenzoic acid. Reason : o–hydroxybenzoic acid has intramolecular hydrogen bonding.

p-hydroxybenzoic acid undergoes intermolecular H⁻ bonding which results in the association of other molecule of p-hydroxybenzoic acid. This is shown in the following figure. However, o-hydroxy benzoic acid undergoes intramolecular H-bonding. Force of attraction increases in p-hydroxybenzoic acid due to Intermolecular H-bonding and hence boiling point increases. Carboxylic Acid and Its Derivatives 47 Thus, statement I is false and Statement II is true.