How will you detect the presence of sulphur in an organic compound by oxidation test?
Oxidation test (for volatile compounds): The organic compound is fused with a mixture of potassium nitrate and sodium carbonate. Sulphur present gets oxidised to sodium sulphate.
The fused mass is extracted with water and filtered. The filtrate is acidified with hydrochloric acid and then a solution of barium chloride is added. Formation of white precipitate indicates the presence of sulphur in the organic compound.