SODIUM CHLORIDE. 



33 



the mother-solution was prepared by direct weighing of the salt, care being 

 taken to make the weighing as quickly as possible after the removal ot 

 the salt from the desiccator. Chving to the limited supply of this salt the 

 mother-solution contained only one gram-molecule of dissolved substance 

 in a liter. 



TABLE 5. LITHIUM NITRATE. 



SODIUM CHLORIDE. 



The sodium chloride used was prepared from ordinary salt by precipita- 

 tion from concentrated solution by means of hydrochloric acid gas. The 

 salt thus obtained was washed with a little cold water, and was then dried 

 at 120 C. in an air-bath. The 3 N, 2 N, and N solutions were made up by 

 direct weighing, the latter serving as the mother-solution for the lesser 

 concentrations. 



TABLE 6. SODIUM CHLORIDE. 



*Phys. Rev., 1,279 (1893). 



tZtschr. phys. Chem., 11, 110 (1893). 



