The mean activity coefficient (γ±) of 0.1 m aqueous solution of CdCl2 at 298 K and 1 bar is 0.228. Under this condition, the potential of the cell,
Cd(s)|CdCl2(aq.,0.1 m)|AgCl(s)|Ag(s), is
E∘ (AgCl/Ag, Cl-) = 0.22 V; E∘(Cd2+/Cd) = -0.40 V
1
0.75 V
2
0.62 V
3
0.89 V
4
0.49 V