EFFECT OF REVISIONS OF DEBYE-HUCKEL LIMITING LAW COEFFICIENTS ON THE THERMODYNAMIC PARAMETERS FOR STRONG-ELECTROLYTE SOLUTIONS

In order to treat properly the thermodynamics of mixed aqueous electrolytes, parameters obtained from the binary systems must have all been calculated with the same Debye-Huckel limiting law slope. Improvements in experiment and correlation of experimental dielectric constant and PVT measurements cause subsequent changes in calculated values of Debye-Hückel limiting law slopes. A method is described for the adjustment of ion-interaction parameters, resulting from differences in the Debye-Hückel limiting law coefficients. This method, for many equations, obviates the need for refitting the entire data base with the new Debye-Hückel coefficients. Illustration of the method is provided for the conversion of ion-interaction parameters obtained with an earlier dielectric constant equation to values obtained with a recently formulated dielectric constant equation. © 1990, American Chemical Society. All rights reserved.