NIK. W. C. D. WHETHAM ON THE IONIZATION OF 



TABLE II. Potassium Chloride. KC1 = 74 -59. 

 December 16, 1898. Solvent, W = 234'05. R = 33770. 



Barium Chloride (prepared at the Chemical Laboratory). Recrystallised barium 

 chloride was dissolved in good distilled water (No. 1), and recrystallised again in a 

 platinum dish. The remaining liquid was poured off from the crystals, which were 

 redissolved in No. 1 water. The strong solution was cooled, and the new crystals 

 transferred to a funnel and washed with water. 



14'358 grammes of BaCl 2 .2H 2 O were then dissolved in 436*45 grammes of No. 2 

 water. 1 gramme of this solution (a) thus contains '03185 gramme of BaC1.2H 2 O. 



Two samples of this solution were estimated as barium sulphate by gravimetric 

 analysis, and gave '03178 and '03177 gramme per gramme respectively, the mean 

 value being '031775. The dilute solution (b) used for the observations of Series 6 

 had a strength of 6 '2 9 5 X 10~ 6 gramme-equivalent per gramme of solution. This 

 was prepared by diluting a small quantity of solution (a), the strength of which, 

 calculated in the same terms, gives 2'602 X 10~ 4 gramme-equivalent per gramme of 

 solution. 



