INDEXED. 



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL OF SCIENCE. 



I. Ionization in Solutions and Two New Types of 

 Viscosity. By William Suthekland *. 



IN a previous paper on " Ionization " et cet. (Phil. Mag. 

 [6] iii. p. 161) it was shown that the theory of the 

 conductivity of electrolytic solutions is complicated by the 

 entry of the dielectric capacity of the solvent and of the ions. 

 In the present paper it will be shown that the subject is still 

 further complicated by the operation of a new type of 

 viscosity; but that when the electrical and dynamical com- 

 plications are taken into account, there emerges an ideally 

 simple result, namely, that the ionization of all ordinary 

 electrolytic solutions, aqueous or other, is complete at all 

 concentrations. Almost all the literature about the degree 

 of ionization in solutions will need to be interpreted afresh, 

 because this so-called degree of ionization, instead of being a 

 fraction expressing a certain condition of chemical equi- 

 librium between ionized and un-ionized solute, gives a 

 physical measure of the mobility of the completely dissociated 

 ions of the solute. The distinction is an important one for 

 the whole theory of solutions. The present paper is a con- 

 siderable amplification of that just cited, and will consist of 

 the following parts about electrolytic solutions : — 



1. The transfer of energy in them when carrying electric 

 current. 



* Communicated "by the Author. 

 Phil Mag. S. 6. Vol. 14. No. 79. July 1907. B 



