38 



HYDRATES IN AQUEOUS SOLUTION. 

 TABLE 12. SODIUM CHROMATE Continued. 



SODIUM DICHROMATE. 



Sodium dichromate was quite readily soluble in water at ordinary tem- 

 peratures, but at the freezing-points the solubility was greatly diminished. 

 We could, therefore, work only with fairly dilute solutions. The results 

 show very considerable hydrating power on the part of sodium dichromate, 

 which increases with fair regularity from the most concentrated to the most 

 dilute solution. The results for the dichromate can not, of course, be com- 

 pared with those for the chromate, as the two compounds are salts of such 

 different acids. The dichromate behaves about as would be expected. 



TABLE 13. SODIUM BICHROMATE. 



