Which cell will measure standard electrode potential of copper electrode?

Options

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

Answer

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

Explanation

Standard electrode potential of copper electrode can be calculated by constructing a concentration cell composed of two half cell reaction in which concentration of species on left h and an right hand side are unity. In such case cell potential is equal to stnadard electrode potential.