In Part I of this experiment, metal/ion half-cell combinations will be tried.The Nernst Equation
 Theoretical predictions of tendency to gain electrons are used to predict the voltage 
difference between two electrodes.Under standard 
conditions (25 ?C, 1 M solution concentration, 1 atm gas pressure),these theoretically 
predicted voltages are known as standard emfs ( or E?cell ).From the data, 
a table will be developed, listing various elements and ions in order of their tendency to 
gain or lose electrons.The Nernst 
Equation allows cell voltages to be predicted when the conditions are not standard.Walter Nernst developed the following equation in the late 1800's while studying the 
thermodynamics of electrolyte solutions: