Detection of Halogen in Organic Compound #Hunbli

Detection of Halogens

In Orgainic Compound 

    

Materials Required

 Real Lab Procedure 

Test	Experiment	Observation	Inference
Silver nitrate Test	To a small portion of Lassaigne's extract add 1 ml of conc. nitric acid and boil for some time. Cool the contents and to it add silver nitrate solution.	A white precipitate soluble in ammonium hydroxide forms.	Presence of chlorine in the  compound.
		Pale yellow precipitate sparingly soluble in ammonium hydroxide forms.	Presence of bromine in  compound.
		Yellow precipitate insoluble in ammonium hydroxide forms.	Presence of iodine in  compound.
Carbon disulphide Test	Acidify a small portion of Lassaigne's extracts with dil. HCl and add a few drops of carbon disulphide. Now add freshly prepared chlorine water and shake vigorously.	Appearance of orange colour in the carbon disulphide layer.	Presence of bromine in  compound.
		Appearance of violet colour in the carbon disulphide layer.	Presence of iodine in  compound.