48 



HYDRATES IN AQUEOUS SOLUTION. 



POTASSIUM HYDROXIDE. 



Potassium hydroxide, free from carbonate, was carefully preserved during 

 the investigation in closed vessels. It could be used up to a concentration 

 that was about 8 N. The total amount of combined water passes through a 

 minimum at a concentration of about 0.3 N. Similarly, the number of mole- 

 cules of water in combination with one molecule of the base. In general 

 behavior, respecting its power to combine with water, potassium hydroxide 

 is, then, strictly analogous to sodium hydroxide. 



TABLE 27. POTASSIUM HYDROXIDE. 



