OF AQUEOUS SOLUTIONS. BARNES. 



117 



As the ratio ~ was thus found to be constant for the 



two most dilute solutions of every salt, and as these solutions 

 are very dilute, this ratio may be assumed to approximately 

 hold for infinite dilution. Observations on the conductivity of 

 weaker solutions at different temperatures were not at hand ; 

 and the writer used the value of this ratio for the solution of 

 concentration .0001 for the calculation of the specific mole- 

 cular conductivity at infinite dilution for 25 C. 



The following Table II gives the values of the specific 

 molecular conductivity at infinite dilution for 25 C. as thus 

 obtained from the values at 18 C. In the case of copper sul- 

 phate this method could not be employed for want of data. A 

 somewhat doubtful value obtained by a Bredig was therefore 

 used. The conductivities are expressed as in Table I. 



TABLE II. 



Determination of the lonization Coefficients at 25 0. 

 for Simple Solution*. 



The ionization coefficient for a simple solution is taken to be 

 the ratio of the specific molecular conductivity to the specific 



1 Ztschr. f. phys. Chem., 13, 220, 1894, 



