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Test for Carbonates
Carbonates react with acids to form carbon dioxide gas. Dilute nitric acid is added to the sample. Bubbles of gas will be seen if it is a carbonate. Na2CO3(aq) + 2HNO3(aq) → 2NaNO3(aq) + CO2(g) + H2O(l)The gas when bubbled through limewater will turn it cloudy.CO2 + Ca(OH)2(aq) → CaCO3(s) + H2O(l)
Test for Sulfates
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Key terms in this lesson
- Acid
- A proton donor; a substance that releases hydrogen ions when dissolved in water.
More in Reactivity Trends
- Uses of Group 2 Compounds
- Group 7 Halogens Trends in Boiling Points
- Group 7 Redox Reactions and Reactivity
- Halogen-Halide Displacement Reactions
- Halogen Disproportionation Reactions
- Uses of Halogens
- Test for Halide Ions
- Test for Ammonium Ions
All 16 lessons in Reactivity Trends · All OCR AS-level Chemistry topics