Identify the anion present in the following compounds: Compound L on reacting with Barium chloride solution gives a white precipitate insoluble in dilute hydrochloric acid or dilute nitric acid.
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Solution
Sodium sulphate reacts with barium chloride to give white precipitates of barium chloride. These precipitates are insoluble in dil.HCl. Hence the anion present is SO2−4.