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1. If you do a flame test:
Lithium - red
Sodium gold yellow
Potassium - lilac
Calcium - red
Barium - green
2. Or you can add what?
White precipitate forms
Blue precipitate for copper
Red and brown for iron
CO3 add HCL and see if it fizzes. Gas bubbles will turn limewater cloudy
Halides add nitric acid and silver nitrate solution
Sulphate add HCL then barium chloride. White precipitate forms.
Nitrate add aluminium powder and then NaOH. Warm it. Test with red
litmus paper, if it turn blue, ammonia present so nitrate is present.