Osmotic and activity coefficients for the CsF + methanol or ethanol + water ternary systems determined by potentiometric measurements

The thermodynamic properties of CsF in the ROH (R = methyl or ethyl) + water mixtures were determined using potentiometric measurements at 298.15 K with the mass fraction of ROH varying from 0.00 to 0.30. The Pitzer, extended Debye–Hückel and Pitzer–Simonson–Clegg equations were successfully utilized to fit the experimental data based on the molality and mole-fraction-composition scale. Except for the standard cell potentials and Pitzer parameters, the mean activity coefficients, osmotic coefficients and standard Gibbs energies of transference of CsF from water to the methanol + water or ethanol + water mixtures have also been discussed herein.

► Potentiometric measurements for CsF + MeOH + H2O ternary system.
► Potentiometric measurements for CsF + EtOH + H2O ternary system.
► Data fitted by Pitzer, extended Debye–Hückel and Pitzer–Simonson–Clegg equations.
► Osmotic and activity coefficients and standard Gibbs energies were calculated.