Apparent Molar Volumes and Osmotic Coefficients in Dilute Electrolyte Solutions

Abstract

The apparent molar volumes and the osmotic coefficients of different types of electrolytes in dilute aqueous solutions are calculated on the basis of the Mayer theory. The sums which appear in the equations are calculated for different values of the ionic strength and suitable functions of the sums are represented graphically. The results show that the Mayer theory accounts in a satisfactory way for the molar volumes and the osmotic coefficients in very dilute solutions, with the distance of closest approach used as the only adjustable parameter. The limits of this agreement of the theory with the experiments are discussed.