( m ) 



db 



-— bas difiereut vjilues depending on the vai'iations of the volume. 

 dx 



Now 



'd6 



dp\ \OxJo da 1 a \\ da MRJ fob 



^xJcT (i' — ^>y dx v^ v^ \a dx a v^ö.t'/y (v — /^/ j 



dh 

 If we call — the value denoting the change of h with change ot 

 dx 



cc, when we make also the volnme varv in such a way that the 



mixture is again in the state Avhich may be called the critical state 



of the nnsplit mixture, then : 



db _ /ö^A èb /"dv^ 



dx yè^vjv ö'-' \dxjkr 



f fdv\ db f , , , 



and ?v being = b - — , Mr = v ir — , when / and x are con- 

 y— >j \dxjy dx f—Y, 



f--2 1 db 



we find '-T— :; — and so : 



/ — lb dx 



1 fdp\ a \l da /— 2 1 db 



p \dxJcT pi'' jot dx f — 1 b dx] 



or 



a 



p \dxJrT I dx ^ f-ldx \ 



This value is in a high degree dependent on ƒ. 



1 fdp\ { dT, 1 db ] 



With ƒ = 4 we find - / == - 3 — - + - — . 



•^ p \OxJi,T { J ".d'V o bax ) 



1 /öyA I dT, 1 f/Z> 



With /'= 7 on the other hand -[~\ = — 6 —— - + tt r7" 



•^ /) V^-'^Vi'ï' (2>^c?.^■ b bdx 



