Test for ions

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Chemistry

GCSE Chemistry

WJEC

Last updated 5:12 PM on 5/22/25
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6 Terms

1
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Sulphate ions

Few drops of barium chloride - positive = white precipitate

2
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Carbonate ions

Few drops of hydrochloric acid to solution or bubbling gas through limewater - present = fizzing or turns cloudy

3
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Halide ions

Silver nitrate + nitric acid impurity

4
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Halide ions - chlorine

White precipitate

5
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Halide ions - bromide

Cream precipitate

6
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Halide ions - iodine

Yellow precipitate