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A hydrogen electrode placed in a buffec ...

A hydrogen electrode placed in a buffec solution of `CH_3COONA` and acetic acld in the ratio's x: y and y : x has electrode potential values `E_1` volt and `E_2` volts respectively at `25^@C.` The `pK_a` values of acetic acid is `E_1 and E_2` are ox-potential)

A

`(E_(1)+E_(2))/(0.118)`

B

`(E_(2)-E_(1))/(0.118)`

C

`-(E_(1)+E_(2))/(0.118)`

D

`(E_(1)-E_(2))/(0.118)`

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A
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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:

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)

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