CH-1626
Tests for anions
Chemistry · Secondary 4 · Medium · Tests for anions
A student suspects that a sample of solid sodium carbonate is contaminated with barium carbonate. Which test will best confirm the presence of barium carbonate?
- Add dilute hydrochloric acid and test the gas with a glowing splint.
- Dissolve the solid in water and test the solution with blue litmus paper.
- Add dilute nitric acid, then aqueous silver nitrate and look for a white precipitate.
- Add dilute nitric acid, then aqueous sodium sulfate and look for a white precipitate.
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