Chemistry - GOC Question with Solution | TestHub

Electron withdrawing substituent increases the acidity by increasing the ionic character of $-\mathrm{OH}$ by inductive effect. Electronegativity decreases in the order. $\mathrm{F}>\mathrm{Cl}>\mathrm{Br}$ -I effect also decreases in the same order. Thus, the correct sequence is $\begin{array}{rl}& {\mathrm{FCH}}_2\mathrm{COOH}>{\mathrm{ClCH}}_2\mathrm{COOH}>\\ & {\mathrm{BrCH}}_2\mathrm{COOH}>{\mathrm{CH}}_3\mathrm{COOH}\end{array}$ Related Theory I effect is a permanent effect & generally represented by an arrow on the bond.