A hydrogen electrode X was placed in a buffer solution of sodium acetate and
Channel: Doubtnut
Date: 2020-04-19

A hydrogen electrode X was placed in a buffer solution of sodium acetate and acetic acid in the ratio `a:n` and another hydrogen electode Y was placed in a buffer solution of sodium acetate and acetic acid 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: