ON THE HALOGEN HYDRIDES AS CONDUCTING SOLVENTS. 

 Fig. 3 contains typical curves showing the variation of *V = p. with V for 



(1) Substances dissolved in halogen hydrides ; 



(2) Potassium chloride in water ; 



(3) Sodium carbonate in water ; 



(4) A solution of ammonia in water. 



161 



10 I? 14 16 



I/ 



18 ?0 



Fig. 3. 



The similarity between the variation with dilution of /cV 2 (or /cV") for solutions in 

 the halogen hydrides and that of :V = p. for aqueous solutions is at once apparent. 



Since in the former case *V 2 = K', and in the latter p. = /cV = /*, and since 

 both p.^ and K' are constants, it is evident that both sets of curves represent a 

 variation in a and that K' represents the value of the molecular conductivity at 

 infinite dilution of the electrolytic compound. 



Although the majority of the curves in figs. 1 and 2 are analogous to those for 

 water solutions, some of them exhibit a maximum value for /cV", whilst others are 

 extremely steep, thus indicating a very rapid increase in the value of . 



These irregularities are to be expected, since, as already stated, we have been 



VOL. CCV. A. Y 



