POTASSIUM CARBONATE. 



45 



POTASSIUM DIHYDROGEN PHOSPHATE. 



The specimen used was dried in an air-bath for three clays at 100 C. 

 and was then preserved in vacuo over sulphuric acid. The mother-solution 

 was made up by direct weighing and the lesser concentrations obtained 

 by dilution. Owing to the slight solubility of the salt it was found to 

 be impossible to extend the freezing-point measurements beyond normal 

 concentration. 



TABLE 23. POTASSIUM DIHYDROGEN PHOSPHATE. 



*Phys. Rev., 4, 284 (1897). 



POTASSIUM CARBONATE. 

 TABLE 24. POTASSIUM CARBONATE. 



