calculates whether one of nearly 282,000 oxidation-reduction (redox) reactions can occur. It uses 531 different half reactions that can be put together to form full reactions. Simply select one oxidation and one reduction half reactions and press the "perform calculations" button to display the results. The results consist of oxidation half reaction, it's potential and equilibrium constant, and reduction half reaction, it's potential and equilibrium constant. It also displays whether the reaction can occur, and if it can, it displays both the left and the right sides of the reaction. You can save, print and copy the results to the Clipboard. You can also add up to 300 extra reactions.