204- Instructions for the Qiialitative Analysis of Soluble Salts. 



SUPPLEMENTARY TESTS. 



For Nos. 1, 2, 3, of the metals. 



Salts of Ammonia give the odour of ammonia when 



warmed with a few drops of a solution of potash. 

 Salts of Soda held in a dry state in a small blue flame 



colour it yellow. 

 Salts of Potash do neither. 

 For Nos. 4, 5, 6, of the metals. 



Salts of Barytes give precipitates with solutions both of 



the yellow and the red chromate of potash. 

 Salts o( Strontian with the yellow chromate alone. 

 Salts of Lime with neither. 



SUPPLEMENTARY TESTS. 



For Nos. 1, 2, of the acids. 

 Dry Nitrates heated with dry bisulphate of potash in a 



glass tube, produce a red gas. 

 Dry Chlorates do not. 



Easy method of applying Sulphuretted Hydrogen Gas as a 

 Test. — Take a test tube, an inch wide and six inches long. 

 Put into it half a grain of sulphuret of iron, or sulphuret of 

 antimony, and two or three drops of muriatic acid. Insert 

 into the mouth of the tube a slip of white paper, three inches 



