What are the half-cell equations? Which one is oxidizing and which is reducing? Why?
What are the standard electrode potentials of the half-cells?
What is the significance of the word standard above?
What does Le Chatelier predict about the position of equilibrium if you change the concentration of one electrolyte?
What does such a shift in equilibrium position do to the electrode potential of that half-cell?
What is the effect on voltage of the whole cell?
Clive