Question

Phenol is less acidic than

• A. Ethanol
• B. o-nitrophenol
• C. o- methylphenol
• D. o-methoxyphenol

Answer 1

Answer: (B)

o-nitrophenol

Answer 2

Phenol is less acidic than o-nitrophenol as electron withdrawing $( - NO_{2})$ group increase the acidity of phenols while electron donating groups $( - CH_{3}, - OCH_{3})$ decrease the acidity of phenols. Phenols are more acidic than alcohols.