38 



WORK OF C. M. STINK. 



curves showing the differences in the values of M correspond to a constant difference 

 in the amount of water eliminated in single solution and in the mixture. This con- 

 stant difference is, of course, due to the fact that the concentration of both salts in 

 the mixture is increased uniformly. The curves show, also, that this difference is 

 slightly affected by the difference in the amount of water present as solvent, since 

 they show a tendency to increase as the diminution in water present as solvent 

 becomes greater. 



SODIUM BROMIDE AND LITHIUM BROMIDE. 



We next took up a pair of binary electrolytes, lithium bromide and sodium 

 bromide, neither of which has a very large hydrating power, the hydrating power 

 of the sodium bromide being somewhat less than that of the lithium bromide. 

 (Tables 25 and 26.) 



Since lithium bromide and sodium bromide are each binary and dissociated to 

 almost exactly the same extent at equal concentrations of the solutions, the loss in 

 conductivity is apportioned to an equal driving back in the dissociation of the lithium 



l.TLiBr 



and 



1.9LiBr 



bromide and sodium bromide, except in the mixtures i 7 ax t> ** , \ AJVR r 



where the slight difference in the dissociation of the separate solutions is taken into 

 account. 



