The Nernst equation represents the sum of the change in Gibb's free energies for a cell at a given temperature.
For the cell reaction : Cu2+(aq)(C1)+Zn(s)→Zn2+(aq)(C2)+Cu(s) the change in free energy ΔG at a given temperature is a function of
Gibbs free energy change for a cell reaction is positive what does it indicates?