﻿Molecular Thermodynamics . G37 



is not quite so obvious, but will be obtained without difficulty 

 if (13), (10), (6), and (3) are used in the order named. 

 Finally, we have the interesting relations 



Appendix II. 



The practical significance of (39) may be illustrated in a 

 simple way, by means of a suppositious case in connexion 

 with strong electrolytes, entirely analogous to that given in 

 the appendix to the previous (second) paper. 



The "general terms" for a dilute solution of a binary 

 strong electrolyte being 



M„'GI-"= fiM,'^'», .... (115) 



we suppose that the " effective " dielectric constant (D) 

 depends on cj in such a way that <£' is a linear function 



Of *', 



f ;=<£ '(l + «c/) (116) 



If this effect of cj on D is independent of its effect on the 

 solvation-equilibria, then we have 



2 a^^= °' 



so that 



G = G" = R<£V 3/2 = R</> V 3/2 (l + ^/V| 



G s = a s " = |Rc/>V 12 = 1R*oV^(1 + «0, . (117) 



Grrf= G M " '= -JB#V 3/2 = -iR^oV 3/2 U + «*') J 



If, on the other hand, the effect of 6 J on D is entirely 

 dependent on its effect on the solvation-equilibrium, then 



% <3G n doc^ _ ^^ , m 30' 

 = R«0 o V 3/2 



