Collect. Czech. Chem. Commun. 1992, 57, 255-262

Activity Ratios of Lyate Ions in the Water-Alcohol Mixtures

Zdeněk Paveleka and Jiří Mollinb

a Galena, 747 70 Opava
b Department of Inorganic and Physical Chemistry, Palacký University, 771 46 Olomouc


A new method for calculating the activity ratio of lyate ions in the water-alcohol mixtures is proposed on the basis of utilizing the linear relations between the Gibbs energies of ion transfer. The results for the water-methanol, -ethanol, and -2-propanol systems are compared with literature data. At the same time, the individual ionic products of water and alcohol in their mixtures were calculated. The accuracy of the method depends on the accuracy of experimental determination of the Gibbs energies of electrolyte transfer and of ionic products in mixed solvents.