72 



CONDUCTIVITY AND VISCOSITY IN MIXED SOLVENTS. 



Carrara, for conductivities in methyl alcohol, were used in order to compare 

 the results. In some cases those of the one give better agreement, in other 

 cases those of the other, indicating that the differences are due to experi- 

 mental errors. 



It should be stated that in this case Gartenmeister's values for the coeffi- 

 cients of viscosity were used. The calculations were made before it was 

 decided to use those given by Thorpe and Rodger. It would hardly be profit- 

 able to recalculate, since the result is the same whichever set of values be 

 employed. We have satisfied ourselves of this by numerous trials. In many 

 cases three or four calculations were made, using the different constants 

 given in the tables of Landolt and Bornstein. 



TABLE 45. for lithium chloride in methyl, ethyl, and propyl alcohols. 

 x 



The volumes compared in table 45 are 256, 403, 604. The values for 

 the conductivities are taken from the work of Carrara and Vollmer, and for 

 n-propyl alcohol from Schlamp. 1 The agreement is satisfactory. 



It is interesting to note that the relation holds for picric acid in solution 

 in methyl and ethyl alcohols. Where the volumes compared are 205 and 270, 



respectively, in the one case equals 0.0665, and in the other, 0.0641. The 



I/ 



data for the comparison are furnished by Schall. 2 



Other results may be summarized (table 46) without further detail. 

 the instances given the agreement continues to be satisfactory. 



In all 





TABLE 46. -- --for various electrolytes in different solvents. 



1 Landolt und Bernstein's Tabellen. 2 Ztschr. phys. Chem., 14, 707 (1894). 



