The correct acidity order of the following is

Options

A. (III) gt (IV) gt (II) gt (I)
B. (IV)gt (III) gt (I) gt (II)
C. (III) gt (II) gt (I) gt (IV)
D. (II)gt (III) gt (IV) gt (I)

Answer

A

Explanation

More stable conjugate base (carboxylate anion, –ve charge always on oxygen atom).

More stable conjugate base (carboxylate anion, –ve charge always on oxygen atom). + I and hyperconjugative effect of `-CH_3` group decreases stability of benzoate anion.

Less stable conjugate base (phenoxide ion is less resonance stabilized than benzoate anion). - Cl group exhibits - I effect.

Less stable conjugate base (phenoxide ion is less resonance stabilized than benzoate anion).