SYSTEM NAPHTHALENE-CHLOROBENZENE-PHENOL, ETC. 



47 



On the whole the results obtained accord well with our 

 hypothesis. At lower temperatures where dissociation is small 



-Tj is nearly constant, demonstrating that most of the phenol is 



à 

 in the form of (C6H60)3. At 64.30° yy is no longer constant, 



but decreases with the decreasing concentration of phenol. ^ 

 has a far larger value at this temperature, and the amount of 

 CcHgO is not inconsiderable in comparison with that of (CjHgO)3. 

 Moreover the degree of dissociation must increase with the de- 

 creasing cencentration, so that the variation of yr in the sense 

 observed is to be expected. 



But the best criterion is the ratio uf the concentration of 

 phenol in the aqueous solution and the molar fraction of the 



