EVIDENCE FOR THE EXISTENCE OF HYDRATES. 



21 



must, however, be remembered in this connection that lithium chloride is 

 a binary electrolyte, yielding only two ions, while barium chloride is a ternary 

 electrolyte each molecule dissociating into three ions. 



Concentration 

 FIG. 14. 



Strontium, calcium, and magnesium chlorides all crystallize with 6 mole- 

 cules of water, and all give freezing-point lowerings of the same order of 

 magnitude. 



