OF AQUEOUS SOLUTIONS. BARNES. 



121 



Determination of the lonization Constants. 

 Table IV gives the values of the ionization constants (k and 

 I) determined by the method of least squares from the data 

 given in Tables III and V, the observed values of the viscosity 

 of the four solutions of each salt being used. The relative 

 magnitude and the sign of the ionization constants would seem, 

 to show that the undissociated molecules exert the greater 

 influence in increasing the viscosity, while the free ions have 

 in some cases a diminishing effect. 



TABLE IV. 



Results of Calculations on Simple Solutions. 

 Table V gives a comparison of the calculated and observed 

 values of the viscosity of simple solutions, the calculated values 

 being determined by expression (1) with the ionization coeffi- 

 cients and ionization constants, as given in the above tables. In 

 this table all the viscosity results are relative to water at 25C., 

 and the concentrations are expressed as in Table I. 



TABLE V. 

 VISCOSITY AT 25 C. 



