Section 1 16. Summary and Discussion. 329 



It is of interest to compare the ionization of hydrochloric acid com- 

 puted in the manner just stated with that of neutral salts of the same ionic 

 type, like potassium and sodium chlorides. At the concentration 0.05 

 normal the ionization- value derived from Kohlrausch's value (3G0) of the 

 equivalent conductance of the acid at 18 is found to be 0.948, provided the 

 equivalent conductance of hydrogen-ion is taken at 315 as derived from the 

 conductivity of the acid at small concentrations ; but it becomes 0.900 

 when the equivalent conductance of hydrogen-ion is taken 6.2 per cent 

 larger than this, in accordance with the transference results. At this 

 same concentration the ionization-values for potassium chloride and 

 sodium chloride, as derived from their equivalent conductances, are 0.891 

 and 0.878. The approximate agreement of these values with the new one 

 for hydrochloric acid seems to justify the extension to largely ionized 

 acids of the principle that salts of the same ionic type have at the same 

 concentration roughly the same degree of ionization. 



