Electrochemical Cells and Potentials
Electric Work = Charge x potential energy diff
Work (J) = coulomb x volt
- 1 coulomb of charge = 6.24 x 1018 electrons
Standard Electrode Potential, E°
- Cu2+(aq) + 2 e- ? Cu(s) +.337v
- Zn(s) ? Zn2+ + 2 e- -(-.763v)
- Zn(s) + Cu2+(aq) ? Zn2+ + Cu(s) +1.100v
Free energy and Standard Electrode Potential
- ?G°rxn = -nFE°
- Farraday constant = 9.649 x 104 J/V-mol