The correct order of acid strength of the following substituted phenols in water at 28° C is

Question

The correct order of acid strength of the following substituted phenols in water at 28° C is (A) p-nitrophnenol < p-fluorophenol < p-chlorophenol (B) p-chlorophenol < p-fluorophenol < p-nitrophnenol (C) p-fluorophenol < p-chlorophenol < p-nitrophnenol (D) p-fluorophenol < p-nitrophnenol < p-chlorophenol

Tardigrade Admin · Accepted Answer

The order of electron withdrawing tendency from benzene ring i.e., - F <- Cl <- NO 2 ∴ Correct order of acidic strength of substituted phenols will be <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/96d95d84af3d1c72621b9e298336ec12-.png" />

Q. The correct order of acid strength of the following substituted phenols in water at $2 8^{\circ} C$ is

$p$ -nitrophnenol < $p$ -fluorophenol < $p$ -chlorophenol

$p$ -chlorophenol < $p$ -fluorophenol < $p$ -nitrophnenol

$p$ -fluorophenol < $p$ -chlorophenol < $p$ -nitrophnenol

$p$ -fluorophenol < $p$ -nitrophnenol < $p$ -chlorophenol

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

Q. The correct order of acid strength of the following substituted phenols in water at 28∘C is

p-nitrophnenol < p-fluorophenol < p-chlorophenol

p-chlorophenol < p-fluorophenol < p-nitrophnenol

p-fluorophenol < p-chlorophenol < p-nitrophnenol

p-fluorophenol < p-nitrophnenol < p-chlorophenol