( 289 ) 

 a iï^ (3m" — 2w) 



27 h 



n = 



3m» 



h h 



3m" — 2» yZm" — 2n 



2w 



as V — /; = — 7 />, as inimedialelv follows from (6). Hence 



3?/r — '111 



4 a w (3w- — 2/i)- 1 a (3m'' — 2w)'" 



^''' "~ 27 7)» /ii^^ 9 è^ ^^^" ' 



i. e. 



1 a (3m-— 2n)-(47?— 37/i) 



''^rih^ m^ ' ^'^ 



identical with what we foniid in Tkylkk, p. 32 (formula (J 7)). 



1 a 

 Here too />.iL- = is duly found both with |i=:() and with 



27 h-k' 



,i = 1 (?>? ^ » =^ i). Just as in the formulae for v/, and liTk, h is 



then constant, and /;/, is either = Aj (if /? = 0), ov^h^ (if i-? = l). 



Of the greatest importance is particularly the knowledge of ihe 



quantity ft = — --. ror this we hnd now: 



1 a (3m'— 2n)-(4« — 3m) 3m- 



27 èi' m' ■ 3m" -^ ''' 



1 8 a n^Sm^—2n) 



or 



l-{-xi327bk m' 



3 m'(4:n — Siii) 

 .a = (l +..^)-_l-_ i (9) 



o 

 For ,? = this becomes (i =:--■, for ,:?=1, and e.g. .?'=ri (r = 2) 



o 



3 

 we lind 2 X , • ^*'d it must then again l)e borne in mind thai then 



for the calculation of fi the critical. volume of a (^/o^/^AMnolecular quan- 

 tity of substance has been taken for v/-. Hence if |i = l, so that we 

 only have simple molecules, the value — if r/.. refers to a single 

 molecular quantity as usual — must still be dixided by 2, and we 



3 



gel again . 



^ Ö g 



Formula (9) corresponds with (18) on p. 32 in Tkyt.er. 



3. Of just as great iin|)orlance is also the knowled.ue of the 

 ([uanlity 



