GORDON. — DISSOCIATION OF FUSED SALTS. 



65 



Results of the Experiments. 



The potentials of four such silver nitrate cells are given in the follow- 

 ing table. The calculated values are obtained by substitution of the 

 absolute temperatures and the molecular concentrations, as given in Table 

 I., in the Nernst formula, 



a 



Ex- E^ = RT loc 



C{ 



TABLE II. 

 Silver Xituate Cells. 



III general I can say that the measurements were all repeated several 

 times, and only in a few cases were there single measurements varying as 

 much as 0.00 1 of a volt from the mean as here given. The behavior 

 of the several cells with regard to their constancy requires individual 

 mention. 



No. 1, at 298°, decreased rapidly in potential after first getting up, but 

 when the 0.1% solution was replaced by that of the outside connecting 

 solution (of same concentration), the value 0.110 volt was always ob- 

 tained. Five minutes later it had always decreased, in one case to as 

 low as 0.100 volt. This rapid decrease in value may account for the 

 fact that the observed value is 0.004 volt less than the calculated. Had 

 the measurement been taken immediately after the fresh solution came in 

 contact with the electrode, the observed value might have been larger. 

 This value was obtained repeatedly, however, the measurement being 

 taken about one minute after the introduction of the fresh solution into 

 the cell tube. 



In the chinoline bath cell No. 1 remained constant for from ten to 

 fifteen minutes, and then decreased. It could be brought back to the 



VOL. XXXIV. — 5 



