Application of the mean spherical approximation to the estimation of electrolyte activity coefficients in methanol solutions

Activity coefficients and thermodynamic association constants have been estimated for NaBr, NaCl, NaI, NaClO4, Bu4NBr, Bu4NI, and Bu4NClO4 electrolytes in methanol by means of a fit of experimental data to theory using the unrestricted version of the mean spherical approximation. Realistic sizes for the solvated ions and for ion pairs have been determined. The thermodynamic association constants derived are compared with values obtained from conductance studies.