FLUIDITY OF SOLVENT MIXTURES. 



157 



Tables 74 and 75 (fig. 74) show that there is a minimum of fluidity not 

 only in the case of the mixtures of the pure solvents methyl alcohol and 

 water and ethyl alcohol and water at both temperatures, but also in the 

 case of lithium bromide dissolved in the above solvents. The fluidity of a 

 liquid being the reciprocal of its viscosity, the viscosity curve would pass 

 through a maximum in the above cases. A large number of investigations 

 have been carried out on the viscosities of the alcohols and water, notably 



350- 



300 



250 



200- 



150 



100- 



50 



75$ 



100j 



Percentage of Acetone 

 FIG. 76. FLUIDITY OF SOLVENT MIXTURES AT 25. 



by Poisseuille, 1 Stephan, 2 Pagliani and Battelli, 3 Noack, 4 and Traube. 5 Quite 

 recently some work has been done on the viscosity of mixtures of the alcohols 

 and water by Dunstan, 6 Blanchard, 7 and Varenne and Godefroy. 8 All of these 



1 Mem. Inst. Paris, 9, 433 (1896). 

 2 Wied. Ann., 17, 673 (1883). 



3 Atti. di R. Ac. delle Sc. d. Torino, 20, 



607 (1885). 



4 Wied. Ann., 27, 289 (1886). 



5 Ber. d. chem. Gesell., 19, 871 (1886). 



Journ. Chem. Soc., 85, 817 (1904). 

 7 Journ. Amer. Chem. Soc., 26, 1315 



(1904). 

 "Compt. rend., 137, 992 (1903); 138, 



990 (1904). 



