Testing for Halide Ions:
1) Add some dilute nitric acid to the test sample.
2) Then add 10 drops of silver nitrate solution.
3) If halide ions are present a precipitate will form:
- Chloride ions will form white precipitate
- Bromide ions will produce a cream precipitate
- Iodide ions will produce a pale yellow precipitate.
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Example of simple preipitation reaction: barium chloride+sodium sulphate-->barium sulphate + sodium chloride
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