Activity coefficients of the tetramethyl compounds of Group 14 elements in n-alkane solutions from g.l.c. measurements

Abstract

The activity coefficients at infinite dilution at various temperatures have been determined by g.l.c. for all the tetramethyl compounds of Group 14 elements in the solvents n-dodecane, n-hexadecane, n-eicosane, and n-tetracosane; the excess partial molar enthalpies at infinite dilution have been calculated. The activity coefficients have been discussed in terms of the quasi-lattice theory. The “segment” and “contact-point” treatments previously used for n-alkane mixtures and for (an n-alkane + benzene) have been extended to (an n-alkane + a tetramethyl compound).