126 ON THE VISCOSITY 



of the conductivities are multiplied by the constant -^- 25 - 1 . Then 



^oo2 



these new values are plotted against the corresponding concen- 

 trations. on the same coordinate paper, to the same scale as 

 employed for equation (12). From these two curves one finds 

 by inspection two points, one on each curve, having a common 

 abscissa, according to equation (10), and ordinates (C t and C a ) 

 such that by substituting their values in equation (11) it will be 

 satisfied. These points can be found after two or three trials. 

 Thus one has determined k lt G I} and C 2 ; & 2 being found by 



multiplying k. by the constant a . The as are now obtained 



from equations (8) and (9) ; for the reciprocals of the C's give 

 the Vs. 



Results of the Calculations on Mixtures. 



The following Table VI contains the requisite data for the 

 calculation, by formula (3), of the viscosity of mixtures of solu- 

 tions of the salts under consideration ; and it shows the agree- 

 ment of the values thus calculated with the observed values 

 The ionization coefficients of the salts in the mixture are deter- 

 mined as above and the concentrations are expressed as in the 

 former tables. 



