Testing ions
- Created by: 20msincl123
- Created on: 26-04-18 16:06
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- Testing for ions
- Negative
- Positive
- Add NaOH (aq)
- If gas produced when heated
- Red litmus turns blue
- NH4+
- Red litmus turns blue
- If gas produced when heated
- Add NaOH (aq)
- Add nitric acid and test gas with limewater
- Stayed clear but fizzed, limewater turned cloudy
- Carbonate CO3 2-
- Stayed clear but fizzed, limewater turned cloudy
- Add small amount of nitric acid and silver nitrate solution
- White precipitate
- Chloride CO-
- Yellow precipitate
- Bromide Br-
- Yellow/ cloudy but NO precipitate
- Iodide I-
- White precipitate
- Add barium chloride
- Turns milky white
- Sulphate SO4 2-
- Turns milky white
- Positive
- Negative
- If no soldier formed Flame test
- lilac - K+
- Crimson Li+
- Add NaOH (aq)
- If gas produced when heated
- Red litmus turns blue
- NH4+
- Red litmus turns blue
- If gas produced when heated
- Brick red - Ca 2+
- Yellow - Na+
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