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LXXI1I. The Theory of Electrolytic Dissociation. (A Rectifi- 

 cation of the " Correction" by Professor Harry C. Jones.) 

 By Louis Kahlenberg, Ph.D., Professor of Physical 

 Chemistry in the University of Wisconsin *. 



THE " Correction " by H. C. Jones f which recently 

 appeared in this Journal is founded upon an error on 

 the part of its author to which I desire to call attention. The 

 supposed "correction " relates to the following passage which 

 Jones quotes from p. 215 of my paper J : — " In 1901 I pub- 

 lished a list of results of cryoscopic and ebullioscopic 

 determinations made with typical aqueous solutions of 

 electrolytes and non-electrolytes, and also a list of molecular 

 conductivity determinations of the same electrolytes at 0° and 

 at 95°. It is unnecessary to discuss again the details of these 

 results which are rather voluminous. Suffice it to state that 

 a comparison of the freezing-point values with the molecular 

 conductivity at 0°, and also of the boiling-point values with 

 the molecular conductivity at 95°, revealed the fact that there 

 is no such connexion between freezing-points and boiling- 

 points of solutions on the one hand, and their conductivity 

 on the other, as is claimed by the theory of Arrhenius. In 

 numerous cases not even a qualitative agreement exists. 

 The facts presented in the paper cited have since been 

 corroborated by Smits in his careful vapour-tension measure- 

 ments, and by H. C. Jones and co-workers in their molecular 

 weight determinations on solutions." 



Now it is clear that this passage relates to aqueous solutions 

 as the first sentence of it explicitly states, which fact has been 

 entirely overlooked by Jones, for after quoting the above he 

 continues § : — " Referring to the paper cited by L. Kahlen- 

 berg || , and turning to page 342, we find the following : — 

 Under the heading ' Behaviour of non-aqueous electrolytic 

 solutions ' the following supposed i facts are presented.' 

 ' Again, many solutions have been found in which the solute 

 according to molecular weight determinations is undissociated, 

 and which nevertheless possess excellent power of conducting 

 electricity/. . . . ' According to Dutoit and Friderich, Cdl 2 , 

 LiCl_, Nal, HgCl 2 , and -NH 4 CnS have normal molecular 

 weights in acetone, and yet these solutions are conductors of 

 electricity , ; " Jones then proceeds to give a general statement 



* Communicated by the Author, 

 t Phil. Mag. [6] x. p. 157 (1905). 

 X Phil. Mag. [6] ix. p. 214 (1905). 

 § Loc. cit. p. 158. 

 || Jonrn. P/njs. Chem. v. p. 339 (1901). 



