A hydrogen electrode X was placed in a buffer solution of sodium acetate ad acetic acid in
Channel: Doubtnut
Date: 2020-01-26

A hydrogen electrode X was placed in a buffer solution of sodium acetate ad acetic acid in the ratio `a:b` and another hydrogen electrode `Y` was placed in a buffer solution of sodium acetate ad acetic in the ratio `b:a` if reduction potential values for two cells are found to be `E_(1)` and `E_(2)` respectively w.r.t. standard hydrogen electrode, the `pK_(a)` value of the acid can be given as (A) `(E_(1)-E_(2))/(0.118)` (B). `-(E_(1)+E_(2))/(0.118)` (C). `(E_(1))/(E_(2))xx0.118` (D). `(E_(2)-E_(1))/(0.118)`