Thermochemical Investigations of Nearly Ideal Binary Solvents 3
Solubility in systems of nonspecific interactions
The simple model which has previously led to successful predictive equations for the partial molar excess enthalpy of a solute in nearly ideal binary solvents has been slightly modified for application to the partial molar excess Gibbs free energy (excess chemical potential) of the solute in these systems. Three predictive equations are derived and tested for their ability to predict solubility in mixed solvents from measurements in the pure solvents. The most successful equation involves volumetrically weighted interaction parameters for the excess Gibbs free energy relative to the Flory-Huggins entropy of mixing, and predicts solubility in 22 systems containing naphthalene, iodine, and stannic iodide as solutes with an average deviation of 1.5% and a maximum deviation of 4%, using no adjustable parameters.
W. E. Acree and G. L. Bertrand, "Thermochemical Investigations of Nearly Ideal Binary Solvents 3," Journal of Physical Chemistry, American Chemical Society (ACS), Jan 1977.
The definitive version is available at http://dx.doi.org/10.1021/j100527a010
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© 1977 American Chemical Society (ACS), All rights reserved.