TRANSACTIONS 



OF THE 



c0tiart Institute of 



SESSION OF 1895-96. 



I. ON THE CALCULATION OF THE CONDUCTIVITY OF MIXTURES 

 OF ELECTROLYTES. BY PROF. J. G. MACGREGOR, 



Dalhousie College, Halifax, N. 8. 



(Read 9th December, 1895.) 



Arrhenius has deduced* as one of the consequences of the 

 dissociation theory of electrolytic conduction, that the condition 

 which must be fulfilled in order that two solutions of single 

 electrolytes, which have one ion in common, and which undergo 

 no change of volume on being mixed, may be isohydric, i. e. t 

 may on being mixed undergo no change in their state of disso- 

 ciation, is, that the concentration of ions (i. e., the number of 

 dissociated molecules per unit of volume) shall be the same for 

 both. He obtained this result by combining the equations of 

 kinetic equilibrium for the constituent electrolytes before and 

 after mixture. As I shall have occasion to refer to these 

 equations below, I may give them here. 



Let P m Q and P^ R be the general chemical formulae for two 

 electrolytes having the ion P in common ; let > v l and v 2 be the 



*Ztschr. f. physikalisehe Chemie, ii, p. 284, (1888.) 



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