32 



WORK OF C. M. STINE. 



For the sake of comparison, the values of M for the separate solutions of calcium 

 chloride and strontium chloride and those for the mixture of the two salts have been 

 plotted as curves in fig. 4. 



Fig. 4. 



I. Calcium Chloride Alone. 



II. Calcium Chloride Mixed with Strontium Chloride. 

 III. Strontium Chloride Alone. 

 IV. Strontium Chloride Mixed with Calcium Chloride 



.5 1 



Gram Molecules of Salt 

 per Liter of Solution 



We find that the results expressed in fig. 4 are of the same character as those 

 shown in fig. 3 for the mixture of calcium chloride and magnesium chloride. The 

 curve of hydration of each salt in the mixture is parallel to the curve of its hydration 

 in the single solution, except where large values, as shown in curve I, for calcium 

 chloride alone have produced a corresponding lessening in the amount of water with 

 which the strontium chloride has been able to unite in the mixture at a normality 

 of 0.15 to 0.35. An increase in the hydrating power of the calcium chloride must 

 necessarily be accompanied by a corresponding decrease in the complexity of the 

 hydrates of strontium chloride. 



Table 19. Difference in Amount of Water Present as Solvent in Separate Solutions and in Mixtures. 



