ion concentration given reduction potentials in electrochemical cell?

Question

What concentration of Ag+ is present in the folllowing electrochemical cell if E=-0.683V and E^o (Ag+)=+0.799V at 25 degrees Celsius?

Ag |Ag+(?M) || H+(1.0M) |H2(1.0atm)| Pt

Answer 1

Use the eqn.

E = Eo - ln(K/RT)