The compound that does NOT liberate , on treatment with aqueous sodium bicarbonate solution, is
- (A)Benzoic acid
- (B)Benzenesulphonic acid
- (C)Salicylic acid
- (D)Carbolic acid (Phenol)✓ Correct
Answer: (D)
Solution
Phenol is less acidic than carbonic acid (), so it does not release with . Only acids stronger than carbonic acid can displace from bicarbonate. Benzoic acid, benzenesulphonic acid, and salicylic acid are all stronger acids than carbonic acid and will liberate .
JEE Advanced · 2013 · 02 Jun 2013 · Paper 1 · Single correct option