Electrochemistry :  Standard-State Cell Potentials
Cell Potential - In a galvanic cell, the potential for the cell to do work on its surroundings by driving an electric current through a wire.
2 H+ + 2 e-H2 E = 0.00 V
 
Reduction:   Cu2+ + 2 e- Cu    Ered=
  0.34 V
Oxidation:             Zn  Zn2+ + 2 e-   Eox=
+ 0.76 V
         
        E= +1.10V
 
Line Notation

For the reaction:

Zn + Cu2+ Zn2+ + Cu

Next:  "Nernst Equation and Faraday's Law"