Thermodynamic analysis of the Zn--Pb--Cd system and interaction studies in ternary liquid dilute solutions

Dilute Zn solutions in the Zn--Pb--Cd system were investigated by an emf method with concentration cells to show the influence of variation in Pb and Cd concentrations on the Zn activity coefficients. Zinc concentrations were held in the mole fraction range 0.03 less than or equal to /sub Zn/ less than or equal to 0.1 with measurements in the temperature range 714 less than T less than 8770K. The limiting values of Zn activity coefficients for other ternary systems previously investigated were analyzed using Krupkowski's method and the random solution model of Alcock and Richardson. Experimental data for epsilon12 and epsilon13 (here 1 = Zn and 2, 3 are components of investigated ternaries) are compared also with the values obtained from limiting activity coefficients of the particular binary systems