266 



ILLINOIS STATE ACADEMY OF SCIENCE 



OXYGEN CONTAINING SUBSTANCES — Concluded. 



Ideal 



M. Pt. Abs. Slope Si. 4.58 



Substance (Tm) (Si) (Lcalc.) Lobs. 



Benzophenone 322.0 830 3800 4310 



Benzil 388.0 1020 4650 4650 



Anthraquinone 558.0 3560 7780 7780 



Acetic acid ..' 289.4 320 1460 2630 



Trichloracetic acid 330.0 775 3540 



Beta oxynaphthoic acid 489.0 1440 6580 



MISCELLANEOUS SUBSTANCES. 



Urethane 318.2 795 3630 3630 



Carbazole 518.0 1400 6400 7050 



Acetamid 350.0 480 2200 



Ortho nitrophenol 319.0 810 3700 3720 



Meta nitrophenol 367.5 1080 4950 



Para nitrophenol 386.0 1150 5260 



1-2-4-dinitrophenol 384.0 1140 5210 



Picric acid 395.5 910 4160 



Lcalc. 

 Tm 

 11.8 

 12.0 

 13.9 

 5.05 

 10.7 

 13.5 



8.03 

 12.3 



6.3 

 11.6 

 13.5 

 13.6 

 13.6 

 10.5 



SUMMARY 



There has been developed a method for calculating 

 solubility based upon Raoult's ideal freezing point law 

 and employing an empirical method for determining the 

 actual deviation from the ideal. 



A method for calculating the latent heat of fusion from 

 solubility data has been described. 



Some generalizations regarding the results to be ex- 

 pected with various types of binary systems are dis- 

 cussed. 



Hildebrand: 



Walden: 



BIBLIOGRAPHY. 



1) Jour. Amer. Chem. Soc, 38, 1452, 1916 



2) Ibid 39, 2297, 1917 



3) Ibid 41, 1067, 1919 



4) Ibid 42, 2180, 1920 



5) Ibid 42, 2213, 1920 



6) Ibid 43, 500, 1921 



7) Ibid 43, 2172, 1921 



Zeit. fur Electrochemie, 14, 713, 1908 



