402 



we may finally write 



+n,(i3-/?/)U,4- P + 



['■ 





+ 





(^,)/Ss''(^',)/3, 



In this tlie quantities 



Q: = q. -I- (p + 



^ 



(^i)/3,''(^i);3j 



A, ; Q, = 7t+ ? + 



(^'2)/3,'>('^'o)/3, 



are tiie total (absorbed) heats of dissociation of the components in 

 the mixture, on transition of Vü double molecule to 1 single molecule. 

 When we further write: 



ni(^:-/?/)Qi + n,(^,-/?,°)Q, = Q, 



we get finally 



{v,\/a, — v^[/a^y 



+ P + 



(^',^'/Uo 



^iC^^iU» + 



+ p + 



(^i^.'k» 



• V ass./ 



n^ (^«,W 



Taking the same remark into consideration in the differentiation 

 as in § 2, we find from this for iv.^ and ?(;, : 





dn. 



+ {P + 



,{vya^—vya,y 



+ w,' h 



(^l^^/u» 



(A^l)/^!» 



[_ a^i, dn^_ 



+ n, 



(r,l/a, — t'i|/a,)* 



.(«^«ss) 



+1 



+ 





In the equation (lass.) we now have (see above): 



, (8) 



in which the last two terms with Aj and A, will be greatly predo- 

 minant. Even if tlie critical pressures of the two components 

 were about the same, so that {Av^)ii^o and (Az;,)^jO will become = 0, 



