Chemistry - Ionic Equilibrium Question with Solution | TestHub

$\left[{\text{CH}}_{\text{3}}\text{COOH}\right]\text{=}\left[{\text{CH}}_{\text{3}}\text{COONa}\right]$
The resultant solution will be a buffer solution.
So$\mathrm{p}\mathrm{H}=\mathrm{p}{\mathrm{K}}_{{\mathrm{a}}_2}+\mathrm{l}\mathrm{o}\mathrm{g}\left[\frac{{\mathrm{CH}}_3-\mathrm{COOH}}{{\mathrm{CH}}_3-\mathrm{COONa}}\right]$…(ii)
From (i) and (ii)
$\mathrm{p}\mathrm{H}=\mathrm{p}{\mathrm{K}}_{{\mathrm{a}}_2}$.