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Name of ion Flame
Lithium Li + Bright red
Sodium Na + Golden yellow/
Orange
Potassium K+ Lilac
Calcium 2+ Brick red
Barium + Apple Green


Page 2

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Name of ion Test Result
Calcium Ca 2+ (aq) Add sodium hydroxide White precipitate formed
solution in drops. Keep which remains even when
adding until in excess excess sodium hydroxide
solution is added
Copper(II) Cu 2+ (aq) Add sodium hydroxide Light blue precipitate
solution in drops formed

Page 3

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Iron(II) Fe 2+ (aq) Add sodium hydroxide Green precipitate formed.
solution in drops On standing changes to a
reddish brown colour.
Iron(III) Fe 3+ (aq) Add sodium hydroxide Reddish brown precipitate
solution in drops formed
Magnesium Mg 2+ (aq) Add sodium hydroxide White precipitate formed
solution in drops. Keep which…

Page 4

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Bromide To a solution of the halide ions add: Cream precipitate
Br (aq) 1. Dilute nitric acid (of AgBr)
2. Silver nitrate solution
Iodide To a solution of the halide ions add: Yellow precipitate
I (aq) 1. Dilute nitric acid (of AgL)
2. Silver nitrate solution
Sulphate Add: 1. Dilute…

Page 5

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Carbon dioxide CO2 Pass gas through limewater Limewater goes
cloudy/milky
Chlorine Cl2 Put in a piece of damp blue Paper goes red then white
litmus paper
Ammonia NH3 Put in a piece of damp red Paper goes blue
litmus paper or Universal
indicator paper
Sulphur Dioxide SO2 Put in a…

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