Chemistry - GOC Question with Solution | TestHub

Electron releasing groups (Alkyl groups) de stabilizes conjugate base. The $+$ I effect of ${\mathrm{C}}_3{\mathrm{H}}_7$ is less than $-1$ effect of $\mathrm{Cl}$ ${\mathrm{K}}_{\mathrm{a}}$ of $\mathrm{HCOOH}$ is $17.9\times 10^{-5}$ ${\mathrm{K}}_{\mathrm{a}}$ of ${\mathrm{CH}}_3{\mathrm{CH}}_2\underset{\mathrm{Cl}}{\mathrm{CH}}-\mathrm{COOH}$ is $139\times 10^{-5}$