138 



Conductivity of Aqueous Solutions. Part V. 



Table 36. Equivalent conductance at round concentrations Continued. 



The results with sodium chloride were in an earlier part of this publica- 

 tion combined with the other results obtained with this substance in this 

 laboratory and were discussed in connection with them (see section 16, 

 Part II). The results with the other substances will alone be considered 

 in the following pages. In the case of the acetic acid we shall employ 

 the values corrected for the conductance of the water. 



It is of interest to compare these results with those of previous investi- 

 gators in the few cases in which duplicate data already exist. In table 37 

 such data are placed side by side. 



Table 37. Comparison of the values of the equivalent conductance at 

 18 obtained by different investigators. 



*Kohlrausch and Holborn, Leitvermogen der Elektrolyte, 159-160, (1S98). 

 tProc. Am. Acad., 40, 409, 415 (1904); Phys. Rev., 19, 383, 386 (1904). The values here 

 given, like our own, are uncorrected for the influence of the water. 



Our results with hydrochloric acid at 18 agree on an average within 

 0.25 per cent with those determined with great care by Goodwin and Has- 

 kell. This is also true of the values for this acid extrapolated for zero 

 concentration, which are 379 and 380 respectively. Our values for sodium 

 acetate in 0.01 normal and for acetic acid in 0.1 normal solution differ, 

 however, from the early ones of Kohlrausch by 1.4 and 1.5 per cent 

 respectively. 



