Question

In which of the following cell(s): `E_("cell")=E_("cell")^(@)`?
A. `Cu(s)|Cu^(2+)(0.01M)||Ag^(+)(0.1M)|Ag(s)`
B. `underset(1 "atm")(PtH_2(g))|pH=1||Zn^(2+)(0.01M)|Zn(s)`
C. `underset(1 "atm")(PtH_2(g))|pH=1||Zn^(2+)(1M)|Zn(s)`
D. `underset(1 "atm")(PtH_2(g))|H^(+)=00.1M||Zn^(2+)(0.01M)|Zn(s)`

Answer 1

Correct Answer - A,B,D
`E_(cell)=E_(cell)^0 - 0.0591/n "log" Q " " "if" Q=1`
`E_(cell)=E_(cell)^0`
`(A)Q=0.01/0.1^2=1 " " (B)Q=0.1^2/0.01=1 " " (C )Q=0.1^2/1=0.01 " " (D)Q=0.1^2/0.01=1`