Comment on "Accurate experimental values for the free energies of hydration of H+, OH-, and H3O+"

The accurate experimental values calculated for the free energies of hydration of ions such as H +, OH +, and H 3O +, were described. The derivation of hydration free energies of OH - and H 3O +, was derived by Palascak and Shields by asserting that the most reliable estimate of the experimental value for hydration of a proton is -264 kcal/mol. This value for the hydration of a proton represents the conventional process with standard states essentially equal to 1 atm for gas and 1 M for solution. Corrected values of the free energies were calculated by using thermodynamic cycles with the values provided by Pliego and Riveros.