72 ART. 10. K. IKEDA : STUDIES ON THE 



l-x = e^ ^ ^'o ^'^; 



hence the fusion point T for the equal vaUies of x must be higher 

 in the present case than in the ideal solution. 

 Since 



i_ i_ 



we get from equation (51) 



2 J^ 



R ^ 0^ + Ci 



7o = l-e^^^o ï'A 



Solving this equation and substituting for Sv its equivalent in equa- 

 tion (32), we get C[i in terms of T, D, X, Q, and Tq. Let this be 



then 



/3 IÎ 



1 — x 





l + {v-l)F{T,%,To,^,Q) 

 For example, when v = 3 



1+2L / ^ ^ - + / — - ^ + 



27 



•%/l_e"ï2(ro r) /{i_cii(n 2')} eP.ls: 2') 

 V 2 + V 4 27 



+ 



1 



This equation has been tested by Yamamoto,^^ and has been 

 found to represent the fusion curve of naphthalene in the system 

 naphthalene and phenol Avitli a very close approximation. 



1) See Art. 11 of this volume, where x denotes the empirical molar fraction of naph- 

 thalene and not that of phenol, as is implied in the foregoing deductions. 



