5© McBAIN [190 1 Pfanhauser 



•(NHj,.Ni(SOj2 saturated solution 18° C .507 



f Ni .118 "I , , , 



o.im 18° i ^,,, )■ toward cathode. 



( NFI^ .272 j 



0.7m 50° .499 



igoi. E. Rieger. 



Ueber die Konstitution halbkomplexer Salze nach ihrer elektrolvtischen 



Ueberfuhrung. Dissert. Breslau. Zeit. f. Elektrochemie, 7, 863, 871. 



Apparatus : two vertical U-tubes joined by a sloping tube 

 (capacity 60 c.c.) ; Pt. electrodes ; no diaphragms ; o.^g Ag ; 

 middle portions unchanged. 



The results below were calculated by the author for concen- 

 tration changes in constant volume, not for constant amounts of 

 water, as is correct. A Cu anode was employed in the experi- 

 ments with copper sulphate, and an Ag anode with potassium 

 mercury cyanide. 



Lest the experimental results of this paper presented in a 

 short summary should be misleading, I have introduced the 

 fifth column below which records the number of monovalent 

 equivalents moved from the cathode into the anode compart- 

 ment while one equivalent of silver is precipitated in the volta- 

 meter; in the case of KjSO^.CuSO^, the Cu moved toward the 

 cathode. The sixth column gives Rieger's interpretation of 

 the results. 



In experiments with potassium ferrous oxalate the author 



found a small increase in the concentration of Fe at the anode. 



CuSO^ 0.2911x1 5ex a. 67- dr 15 



CuSO^.KjSO^ 0.291m 5 — 0.071 Cu 



0.191m 3 — 0.074 Cu 



Agl 0.078m -f KI 1.96 m 4ex 0.018 Ag 



Hglj 0.214m + KT 0.782m 5ex 0.26 Ilg 



Hg(CN)j.2KCNo.8iom 4ex 0.34 Hg | 



Zn(CN)2 0.281m + KCN 1.087111 3ex 0.22 Zn 



Cd(CN)2.2KCN 0.772111 5ex 0.30 Cd I' 



Hg(CN), 

 a.34- it 10 



Cd(CN), 



a. 29- dr 20 



Fe(C,OJ, 

 43- i 20 



f F^ 



K.|Fe(CjO,);, 0.408m 5ex 0.43 Fe j 



igoi. E. H. Riesenfeld. 



Ueber elektrolytische Erscheinungen an der Grenzfliiche zweier Losungs- 

 mittel. Zeit. f. Eiektrochcm., 7, 645. 



An entirely new method. An electrolyte, is dissolved in two 

 not completely miscible solvents so that these are in equilibrium 



