This page provides exercises for relating standard potentials, free energies and equilibrium constants. When you press "New Problem", an unbalanced redox reaction with its Eo will appear. Calculate the missing values, enter them in the cells and press "Check Answer." Results will appear in the main table. The questions will provide a redox reaction. You do not have to balance it completely, but you do need to determine the number of electrons transferred in the balanced equation. If you use scientific notation enter the number is the form 2.3e5. Be careful
about the sign and dimensions of G (kJ) and use 96500 for the Faraday constant. If you get a problem "incorrect", redo it. Pressing "Show Answer" will cause the correct answer to appear and you will no longer be able to submit an answer for that problem.