Question

Give two confirmatory tests for the identification of the sulphate ion.

Answer 1

1. Barium chloride test: Add dilute hydrochloric acid followed by barium chloride solution to the salt solution. A white precipitate of barium sulphate is formed, which is insoluble in dilute hydrochloric acid.
2. Lead acetate test: Add lead acetate solution to the salt solution. A white precipitate of lead sulphate is formed, which is insoluble in dilute nitric acid.