An indirect method of determination of excited state equilibria, such as $\text{p}{K}^{\text{*,a}}$ values, based on ground state thermodynamics and electronic transition energies. This cycle considers only the difference in molar enthalpy change ($\mathrm{\Delta }\mathrm{\Delta }H$) of reaction of ground and excited states, neglecting the difference in molar entropy change of reaction of those states ($\mathrm{\Delta }\mathrm{\Delta }S$).