Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

Acidic character $\alpha$ stability of conjugate base (anion)

Stability of anion $\mathrm{\alpha }–\mathrm{I}$

Hence greater the $–\mathrm{I}$ effect greater will be the acidity

Order of -I-effect $-{\mathrm{NO}}_2>\mathrm{CN}>-\mathrm{F}>-\mathrm{Cl}$ Hence, order of acidity  will be

$\begin{array}{c}{\mathrm{O}}_2{\mathrm{NCH}}_2\mathrm{COOH}>\mathrm{NC}\mathrm{ }{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{FCH}}_2\mathrm{ }\mathrm{COOH}>\mathrm{Cl}\mathrm{ }{\mathrm{CH}}_2\mathrm{ }\mathrm{COOH}\\ \end{array}$