54 AKT. 10. K. IKEDA : STUDIES ON THE 



when we assume as in the foregoing section the associated com- 

 ponent to consist of two chemical species ©a end ©j^, and express 

 the mohir fraction of the normal component (3 by C. But these 

 molar fractions are mostly unknown. The molar fractions usually 

 given are calculated on the supposstion that the associated com- 

 ponent consists of the simpler chemical species ©« alone. These 

 we propose to call emjnrical molar fractions. Now let x be the 

 empirical molar fraction of the associated component, then 1 — x 

 is the empirical molar fraction of the normal substance. The 

 relation between these two sorts of molar fractions is expressed 

 by the following equation : 



As the solution is supposed to be quasi-ideal, equation (25) 

 must hold, which may be written 



= K-e^^^ ^2 ^'^ (32) 



6'p 

 At a constant temperature K is constant and we have 



^ = — ■ TTv ...(33) 



j_ 1 



^ = l + (.-l)4 - ^''^ 



while for the molar fraction of the normal component we get 

 from equations (30) and (31) 



C =: {i + (v_l)6V,}(l~a-) (35) 



These relations may be made more conspicuous by means 



