NO YES AND COOLIDGE. — ELECTRICAL CONDUCTIVITY. 



217 



Table XIII also shows that the dissociation values for the two chlo-- 

 rides are nearly identical at all temperatures and concentrations, the 

 extreme variation being about 2 per cent in the 0.1 normal solution. 

 This gives support to the idea that the decrease of conductivity and of 

 the calculated dissociation is due to a physical cause (probably in some 

 way to the electrical charges on the ions) and not to specific chemical 

 affinity. The theoretical discussion of the results is, however, best post- 

 poned until we have made more extended series of measurements. 



SOD/UM CrfLOfi/D£. 



/oo 



95 

 90 



as 



eo 



75 



70 



6S 



eo 

 ss 



60 



40 eo /SO /60 20O 



Figure 12. 



e<eo 



23 o 



320 



■360 



The values of the constant K in the equation (1 — x) =Kd are 

 tabulated below, as these give a measure of the dissociation-tendency 

 independent of the concentration. They were obtained from the 



plots described in Section XIII by taking the ratio f j of the in- 

 tercepts on the two axes, of the best representative straight line, and 

 dividing this ratio by A . 



TABLE XIV. 

 Values of the Dissociation Constant (1 — r) / C*. 



