403 



A?; will remain comparatively great, because Aj and A, will retain 

 their values. 



Hence in associating components the term with Lv will still more 

 greatly predominate in {\ass) than in mixtures of normal substances, 

 because also q^ and q^ will never be great. Just as with the capacities 

 of heat, these differences in the energ}' constants of the half double 

 molecules and of the single molecules will probably be even quite 

 negligible. Even more than for non-associated components now 



tv a a a 



Av vv^ uu, v' 



may be put, which values will again not differ much in different 

 pairs of substances, when the critical pressures of these substances 

 do not differ too much. 



7. Approximative value of ^^ — ^^'^ with small values of 

 n, (or .r). 



From the perfectly accurate equation of dissociation ^) of the l^t 

 component in the mixture, viz.: 



7,(1-^.) 



(1-.^)^,' ^ K\ RT 



- A, = é 



■A, 



(1 ._ OS) -— \- X 



P + 7«^^ 



2 ' 2 



in which K\ is still a function of the temperature, or also 



/ X 1+/?,A 4 ' 1—/?," 4 



when = ^ IS put, follows immediately : 



1 X 1 -f- Pi 



w l±i . 



Here is evidently I ^^ ' ' =: ^/ (for y==0 when ^:=0j; h 



^ l-h/?/> 



; lience 



1) See among other things Arch. Teyler XI, 3« Partie, 1908, p. 44 et seq. 



