ON THE BOILING POINTS OF AQUEOUS SOLUTIONS OF ELECTROLYTES. 227 



values for the elevation constant which differ very considerably, the value for the ions 

 being comparatively small ? 



So much might be suggested by the fact that for dilute solutions the elevation 

 constant approaches one value, for concentrated solutions it increases with the con- 



400 500 600 700 800 900 



BOILING POINT ELEVATION CONSTANT 



Fig. 16. 



1000 



centration. In the one case there are few molecules present, in the other compara- 

 tively few ions. This hypothesis would be supported by the fact that, for several 

 salts at the same ionization and at a not very different concentration, nearly equal 

 values of the elevation constant were obtained. 



