OF CERTAIN ORGANIC BASES AND ACIDS. ^CREIGHTON. 161 



From the foregoing conductivity measurements, it will he 

 seen that, where cenductivities were measured at different 

 dilutions, the molecular conductivities increased with dilution, 

 as in aqueous solutions; that the "electrolytic dissociation"^ of 

 the above bases must be exceedingly small ; and, also, that the 

 '^electrolytic dissociation" of their salts with camphor- 

 carboxylic acid, although twenty to several hundred times 

 greater, is still of the same small order. There is. reason to 

 believe that the salts of these bases with bromoamphor- 

 earboxylic acid are probably "electrolytically dissociated" to a 

 much greater extent. 



It was hoped to have been able to determine the dissocia- 

 tion constants of the different bases in acetophenone solution, 

 but this was found to be impossible, owing to the large errors 

 introduced by the extreme smallness of the conductivities and 

 the rapidity with which the specific conductivities of the solu- 

 tions approached the specific conductivity of the solvent, even 

 at small dilutions. From the last two columns of table 2, it 

 will be seen that the specific conductivities of equi-molar aqueous 

 solutions of benzylamine, isobutylamine, conine and piperidine, 

 are relatively proportional to their dissociation constants. In 

 view of this it is possible that the specific conductivities of 

 equi-molar acetophenone solutions of the different bases, which 

 are about ten thousand times smaller than for water solutions 

 of the same concentrations, are also a measiire of their dis- 

 sociation constants in this solvent. From the measurements 

 made it would appear, then, that the dissociation constants of 

 the different substances employed are very much smaller in 

 acetophenone solution than in water. This supposition is in 

 harmony with the jSJ^ernst-Thomson rule, which shows clearly 

 the close parallelism between the dielectric constant of the 

 solvent and its dissociating power, since Walden has recently 



1. Here by "electrolytic dissociation " and "electrolytically dissociated" are meant 

 any condition of good electrolytic condnction, without necessarily assuming that the 

 relations are as simple as those which occur in water solution. 



