412 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



Hydrochloric Acid. 

 106 i,^ = 0.34. 106 ^,^, - 0.85. Cell constant = 2.542. 



those of Kohlrausch. Noyes and Sammet f found in ^ig and ^i^ normal 

 solution values 0.5-06 per cent less than Kohlrausch's. The above 

 values were plotted against the cube root of the concentration, and 

 between 0.005 and 0.137 normal were found to lie upon a straight line, 

 the greatest deviation from it being less than 0.1 per cent. 



VI. The Corrected Values of the Equivalent Conductivity. 



In the following table are summarized the equivalent conductivity- 

 values of the dilute solutions computed by botli metliods from all the 

 series of experiments. The values are interpolated for round concentra- 

 tions intermediate between those involved in the experiments. In the 

 case of the first method the values computed from the initial concentra- 

 tion corresponding to the first added portion were used, except in the 

 cases where this was less tliau 0.05 millinormal. 



* In tlicse values no account is taken of the effect of the water, the correction 

 for which is negligible except in the first two cases in which the concentration is 

 approximately only 0.002 normal. For this dilution the correction is +0.2 unit, 

 making the corrected values 375.2 and 375.3 respectively. This correction is taken 

 as one-half that computed from data on p. 401) for a 0.001 normal solution. 



t Journ. Amer. Cliem. 8oc., 24, 904 (1902). 



