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Chemistry
Tests for anions
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Created by
Haman Jhukory
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Cards (6)
Test for carbonate ions
1. Add
dilute hydrochloric acid
to test sample
2.
Bubble
gas produced through
lime
water
3. Lime water turns
cloudy
=
positive
test result
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Carbonate
ions react with acid to form
carbon dioxide
gas and water
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Test for sulfate ions
1. Add dilute hydrochloric acid to remove impurities
2. Add barium chloride solution
3. White precipitate forms = positive test result
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Barium ions react with
sulfate
ions to form a
white
precipitate of barium sulfate
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Test for halide ions
1. Add dilute nitric acid to remove impurities
2. Add silver nitrate solution
3. White precipitate = chloride, cream precipitate = bromide, yellow precipitate = iodide
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Silver ions react with
halide
ions to form differently
coloured
precipitates
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