28 CONDUCTIVITY AND VISCOSITY IN MIXED SOLVENTS. 



TABLE 9. Comparison of the molecular conductivity of potassium iodide. 



Cohen 1 has shown that solutions of potassium iodide in a mixture of alcohol 

 and water show a minimum in the conductivity, but only at great dilutions 

 (512) and when the amount of water present is small. His work, however, 

 was all done at 18 C. From the results in table 9 we see that at we have 

 a minimum in the conductivity values for an alcohol as dilute as 50 per 

 cent, and in solutions which are comparatively strong, namely, fromv = 128. 

 In all probability in alcohol of 75 to 80 per cent a much greater depression 



Ztschr. phys. Chem., 25, 31 (1898). 



