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How do you test for Cl, Br and I ions?
Add dilute nitric acid then silver nitrate
Positive test result for: Chloride
White
Positive test result for: Bromide
Cream
Positive test result for: Iodide
Yellow
Test for carbonate ions
Add some acid
Positive test result for: Carbonate
Fizzing and causes limewater to turn cloudy
Test for presence of sulphate
Add dilute HCl then barium chloride
Positive test result for: Sulphate
White precipitate