Halide-To test for halide ions add nitric acid and sliver nitrate. If a halide is present it will form a coloured precipitate. KI-Yellow, BaCl-White, KBr-Cream.
Sulphate-Add a diltue HCl acid and a barium salt, it will form a white precipitate if sulphate ions are present.
Carbonate-Add dilute acid to the solution and collect any gas given off with a pipet. Place the pipet in the limewater, if it turns cloudy a carbonate is present.
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