Chemistry - Electrochemistry Question with Solution | TestHub

A hydrogen electrode placed in two different buffer solutions, say ' A ' and ' B ', both containing ${\mathrm{CH}}_3\mathrm{COONa}$ and ${\mathrm{CH}}_3\mathrm{COOH}$. If molar ratios of ${\mathrm{CH}}_3\mathrm{COONa}:{\mathrm{CH}}_3\mathrm{COOH}$ in A and B are $\mathrm{x}:\mathrm{y}$ and $\mathrm{y}:\mathrm{x}$ respectively, then pKa value of ${\mathrm{CH}}_3\mathrm{COOH}$ at $25^{\circ }\mathrm{C}$ will be :-

Given that for same hydrogen electrode oxidation potentials in buffer A and B are 0.36 volt and 0.12 volt respectively.

$\left[take\frac{2.303RT}{F}=0.06V]\right]$