 A <> B equilibrium energy

 
Two interconverting species A and B have an equilibrium ratio that depends on their difference in energy and the temperature, according to the equation ΔG=RT*ln(k), where k is the equilibrium constant. This can be derived from the Arrhenius (temprate dependence) equations for the forward and backwards reactions.
 
Enter a measured A:B ratio and the temperature it was measured at. The calc then gives the energy difference between the A and B states. This is either negative or positive, depending whether A or B is the lowest in energy. If you also enter a "temperature x" in the third input box, the calc gives the expected equilibrium A:B ratio (and the proportion of B as a percentage) for that temperature.  