﻿241 



Mr. Bernard Oavanagh on 



of the electrolyte being made quite small] have but negli- 

 gible effect on D, then G' is independent of the constitution 

 of the solvent (practically), i. e. 



so that, 





i 



(Xoi 



=0 



= 0; . . 





G = 



G / 



= UCJ> 'C^\1 + UC S ) 



1 

 * 



G s = 



G-J 



= lR<£o' c * 



1/2(1 +.5 aCg ) 



>)■'■' 



Gj\f= 



Zc 01 G i 



'=— 2^0 



'cv 3 / 2 (l-f3ac s 



(51) 



(52) 



If, on the other hand, we suppose that the effect of c s on D 

 is entirely dependent on the change produced in the consti- 

 tution of the solvent, and would be fully obtained if the 

 latter could be brought about in some other wa}', while c s 

 was made very small, then we should have 



an( 



2 dGT ^ Bcoi _ Rc 3/2 3<£! 



= Rc s 3 / 2 <£'a J 



c=o 



so that 



G'-a = |R(/) w s 



5/2 



(53) 



(54) 



(55) 



i. e. in this second case, 



G = G' -J 2|£'^ 01 =E</, V /2 (1+I«,) 



g s = g; = i r^ v /2 (i +«<■») 



(56) 



Gm = 2<"oiG 



-1 



BG' 



d^oi 



c=o 

 In both cases, of course, 



-<Z< 



-iRtf> V /2 (l + ^) 



G s = G,/, 



but they are not the same in the two cases because in the 

 second case <f>' is a constant when w i> n 02 . . . . are held con- 

 stant, but not in the first case. (For the same reason 

 ScoiGoi' is a l- different in the two cases.) 



In the second case we note that although the constitution 



