The correct order of acid strength of the following substituted phenols in water at $28^{\circ} \mathrm{C}$ is

• A

  $p$-nitrophenol $ < $ p-fluorophenol $ < $ p-chlorophenol
• B

  $p$-chlorophenol $ < $ p-fluorophenol $ < $ p-nitrophenol
• Correct answer
  C

  p-fluorophenol $ < $ p-chlorophenol $ < $ p-nitrophenol
• D

  $p$-flurophenol $ < $ p-nitrophenol $ < p$-chlorophenol

Solution

The order of electron withdrawing tendency from benzene ring i.e.. $$ -F < -C l < -N O_{2} $$ $\therefore$ Correct order of acidic strength of substituted phenols will be

Hence, the correct answer is option: 'C'.