1. The problem statement, all variables and given/known data Calculate standard potential for a Cu2+ 0.5M, Zn2+ 0.5M cell. 2. Relevant equations Ecell = E0cell - (RT/nF)lnQ 3. The attempt at a solution So, I know at standard conditions it would simply be Ecell = 0.340 - (-0.763) Ecell = 1.103 It's the concentrations that are confusing me. If they are the same and no half reactions are multiplied, I get a Q value of 1. lnQ = ln(1) = 0. So in this case does it not matter what the concentrations are as long as they are the same?