32 



PROPERTIES OF ELECTRICALLY CONDUCTING SYSTEMS 



conductance of hydrochloric acid due? It will be recalled that at a 

 temperature of 18 and a concentration of 0.01 normal, for example, the 

 value of the transference numbers of the positive ions in sodium chlo- 

 ride, potassium chloride and hydrochloric acid are 0.396, 0.496 and 

 0.833 respectively. In the case of these electrolytes the negative carrier 



Cube Root of Concentration, C%. 

 FIG. 2. Showing A as a Function of C^. 



is presumably the same, namely, the chloride ion, and it is only the posi- 

 tive carriers which differ in these electrolytes. If, then, the negative 

 carriers are the same in solutions of these electrolytes, it may be assumed 

 that the current carried by these carriers in these solutions under the 

 same conditions of temperature and concentration will be approximately 

 the same, and consequently the difference in the conducting power of 

 these electrolytes is due to the difference in the conducting power of 

 their positive carriers. The carrying capacities of the spdium, potassium 



