Which cell will measure standard electrode potential of copper electrode?

Options

A. `Pt(s) | H_(2)(g, 0.1 " bar")|H^(+)(aq., 1 M)||Cu^(2+)(aq., 1 M)|Cu`
B. `Pt(s) | H_(2)(g, 1 " bar")|H^(+)(aq., 1 M)||Cu^(2+)(aq., 2 M)|Cu`
C. `Pt(s) | H_(2)(g, 1 " bar")|H^(+)(aq., 1 M)||Cu^(2+)(aq., 1 M)|Cu`
D. `Pt(s) | H_(2)(g, 1 " bar")|H^(+)(aq., 0.1" M")||Cu^(2+)(aq., 1 M)|Cu`

Answer

C

Explanation

(c ) For standard electrode potential `(E^(@))`.
`[Cu^(2+)]=1M`