44 



Conductivity of Aqueous Solutions. Part II. 



Table 7. Equivalent conductance at round temperatures Continued. 



POTASSIUM CHLORIDE. 



*These two means refer to the experiments carried to 281 and to 30G, respectively. 



equivalents per liter at 4. In the columns headed " Initial" are given the 

 equivalent conductances obtained from the measurement at the tempera- 

 ture in question before going- to the higher temperatures ; while in the col- 

 umns headed "Final" are given the equivalent conductances obtained after 

 returning to the temperature in question from the higher ones. From a 

 comparison of the separate initial values at any temperature and concen- 

 tration the degree of agreement of the determinations made at different 

 times, and often with different solutions, will be seen. A comparison of 

 the initial and final values in the separate experiments shows the contami- 

 nation that resulted from the heating. In the cases of the 10 and 100 

 milli-normal solutions where the contamination is insignificant, both the 

 initial and final values have been included in deriving the mean ; in the 

 other cases, the means of the initial values and of the final values have 

 been taken separately. 



Table 8 contains a summary of best values derived from the means in 

 table 7. The general mean of the initial and final values has been directly 



