162 PROPERTIES OF ELECTRICALLY CONDUCTING SYSTEMS 



This result, however, does not become apparent in solutions of high 

 dielectric constant, since the effects in question become marked only 

 when the constant ra approaches a value of unity or greater. 



With increasing concentration, the temperature of the conductance 

 maximum decreases, passes through a minimum and thereafter again 

 increases in the more concentrated solutions. This course of the curve 



V = 16.3 



V * 8-14 

 V-S.I7 



20 



Temperature. 



+0* 



FIG. 35. Showing the Conductance as a Function of the Temperature for Solutions 

 of Cobalt Chloride in Ethyl Alcohol at Different Concentrations. 



is illustrated in Figure 35, in which are plotted the temperature-con- 

 ductance curves for cobalt chloride, CoCl 2 , in ethyl alcohol. 15 The 

 course of the maximum is here indicated by the broken line. The lowest 

 point of the maximum temperature is approximately 31 and at a 



an<J Weitzel, Ztschr. /. phys. Chem. 79, 279 (191?) , 



