152 WORK OF M. R. SCHMIDT. 



found this value to be nearly a constant, independent of temperature, for about 



thirty organic solvents. Water and glycol, with values equal to 1.0 and 1.32 



respectively, were exceptions. Glycerol thus becomes another exception with a 



product of at least 2.10. If we compare methyl alcohol, the simplest monacid 



carbinol, with glycol, the simplest diacid carbinol, and with glycerol, the simplest 



triacid carbinol, we see that conductivity does not increase proportional to fluidity, 



but to some fractional power of fluidity. 



Solvent CH 3 OH C 2 H 4 (OH) 2 C 3 H 6 (OH) 3 



/xi7 0.72 1.32 2.10 



A similar conclusion has been drawn by Green 1 from a study of the conductivity 

 and viscosity of solutions of lithium chloride in water containing various amounts 

 of sucrose, and he finds that {J,*, =K(}) ' 7 . 



SUMMARY OF FACTS ESTABLISHED. 



(1) Glycerol, with water, or with methyl or ethyl alcohol, forms binary mixtures 

 whose properties are not additive. 



(2) The conductivity curves of three electrolytes in these mixtures in no case 

 obey the law of averages. 



(3) The same is true of the fluidity curves. 



(4) The temperature coefficients of conductivity of solutions in pure glycerol 

 are very large, and nearly identical with the temperature coefficients of fluidity. 



(5) Glycerol, as a dissociating liquid, resembles water more closely than it does 

 the alcohols. 



(6) Conductivity increases with fluidity, but instead of increasing at the same 

 rates, varies as some fractional power of fluidity. 



1 Journ. Chem. Soc., 93, 2049 (1908). 



