378 



water liydroelilorio acid gas evoU'ed out of tliL' ordiiiarv pure coii- 

 centrated hydrochloric acid. 



Concentrations of sohitions were obtained in must cases i)y volu- 

 metric metliod, and the results were mostly checked by the con- 

 centrations obtained fVum tlic weights of the salts dissolved. 



The following tables give the values of the molecular conductivities 

 obtained : 



I. Hydrochloric acid. 



II Ammonium Chloride 



Thus /'oo obtained = 264.4. 

 The value of :'^ calculated with 

 Kohlrausch's ionic velocities and 

 temperature coefficients = 265.8. 



III. Lithium ('hi ride. 



Dilution 



Dilution 



'^00 is taken to be 72.5 



"^ calculated from Kohlrausch's 



data = 73.1. 



