Potassium iodide is dissolved in a large volume of water, such that you have a large solution that is 1 M K+ and 1 M I-.
Write out the balanced overall equation for the redox reaction that could occur between these species. An electric current would have to have what minimum potential to force the reaction forward? If 20 amps are applied to the solution for 50 minutes, what mass of the iodine-containing product would be formed?