SODIUM HYDROXIDE. 



41 



SODIUM ACETATE. 



TABLE 16. SODIUM ACETATE. 



SODIUM HYDROXIDE. 



Sodium hydroxide was studied over as wide range of concentration as the 

 solubility would permit. From solutions more concentrated than 6 N 

 the solid separated. The material used was free from carbonate, and the 

 solutions were kept in closed vessels during all of the work. The amount 

 of water combined passes through a minimum at a concentration of about 

 0.3 N. From this point it increases with the concentration up to the most 

 concentrated solution. The number of molecules of water in combination 

 with one of the dissolved substances also passes through a minimum. 



TABLE 17. SODIUM HYDROXIDE. 



