Test tube reactions of ions in solution
Test tube reactions of ions in solution
Real World
Water companies like Thames Water use barium chloride tests daily to check for sulfate contamination in drinking water supplies, confirming the presence of SO₄²⁻ ions by the formation of a white BaSO₄ precipitate.
Exam Focus
State the reagent, observation, and ionic equation for each test — missing any one of these three loses marks.
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