AMMONIUM NITRATE. 



51 



AMMONIUM NITRATE. 



The salt was obtained in a comparatively pure condition, and was recrys- 

 tallized several times. It was then dried at 100 C. and preserved until 

 needed in a desiccator over calcium chloride. The mother-solution was 

 prepared by direct weighing, and from it the successive dilutions were 

 made. 



TABLE 30. AMMONIUM NITRATE. 



AMMONIUM SULPHATE. 



The salt used was purified by several crystallizations. It was dried at 

 100 C. in an air-bath, and was then preserved in vacuo over sulphuric 

 acid until required. The mother-solution was made up by direct weighing, 

 and the lesser concentrations obtained by dilution. 



TABLE 31. AMMONIUM CHLORIDE. 



