In which of the following cell (s):`E_(cell)=E_(cell)^(@)`?

Options

A. `Cu(s)|Cu^(2+)(0.01M)||Ag^(+)(0.1M)|Ag(s)`
B. `Pt(H_(2))pH=1||Zn^(2+)(0.01M)|Zn(s)`
C. `Pt(H_(2))|pH=1||Zn^(2+)(1M)|Zn(s)`
D. `Pt(H_(2))|H^(+)=0.1M||Zn^(2+)(0.01M)|Zn(s)`

Answer

A, B, D

Explanation

(A). `E_(cell)=E_(cell)^(@)-(0.059)/(2)log(([Ag^(+)]^(2))/([Cu^(2+)]))`
(B). `E_(cell)=E_(cell)^(@)-(0.059)/(2)log(([H^(+)]^(2))/([Zn^(2+)]))`
(D). `E_(cell)=E_(cell)^(@)-(0.059)/(2)log(([H^(+)]^(2))/([Zn^(2+)]))`