For the Pt(s) stack | Fe2+ (a = 2.00), Fe3+(a = 1.20) || I- (a = 0.10) | I2(s) | En(s)

a) What is the overall reaction, standard potential, Gibbs free energy, and equilibrium constant for the chemical reaction that this cell represents? Also indicate the anode and cathode of this battery. b) What is the potential of the cell?

Evaluate what would happen to the potential of this battery (would it increase, decrease or remain constant in relation to the original potential, calculated in item b) when each operation below is performed. Justify with calculations and appropriate equations.

c) Add more iodide to the respective pole; d) Increase the activity of Iron III ions in the respective pole;