48 



CONDUCTIVITY AND VISCOSITY IN MIXED SOLVENTS. 



TABLE 25. Comparison of conductivities. 



From the data given in table 25, and from the curves plotted in the man- 

 ner already indicated (fig. 11), it is evident that sodium iodide exhibits the 



minimum in mixtures of 

 methyl alcohol and water. 

 Only two dilutions at the 

 two temperatures of obser- 

 vation have been plotted, 

 since the curves would be 

 too close together if all 

 were shown. 



The minimum, as Jones 

 and Lindsay have observed 

 in other cases, is more pro- 

 nounced at than at 25. 

 Further, the shifting effect 

 of change of temperature 

 and of concentration, also 

 observed by Jones and 

 Lindsay, appears at 25, 

 v = 32. The minimum oc- 

 curs in a 75 per cent mix- 

 ture ; beyond this dilution 

 the minima occur solely in 

 the 50 per cent mixture. 

 At the minimum appears 

 to be exhibited in the 50 

 per cent mixture alone. 



13 = 512 (C5 C ) 



V = 3-2 (5) 



V = 512 (0 



V = 32 (0 



25 tf 00 -i 7j;'t 



Perec nt Methyl. Alcohol "by Volume 



ice;; 



FIG. 11. CONDUCTIVITY OF SODIUM IODIDE IN MIXTURES 

 OF METHYL ALCOHOL AND WATER. 



