95028
Description
Mind Map by Samuel Marsh, updated more than 1 year ago
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Created by Samuel Marsh
almost 11 years ago
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Tests for ions
- Positive ions
- Flame test
- Litium (red)
- Sodium (yellow)
- potassium (lilac)
- Calcium (red)
- Barium (green)
- Litium (red)
- Sodium hydroxide solution
- Added to solution
of metal ions
- Results in the formation of metal
ion's hydroxide as a precipitate
- Results in the formation of metal
ion's hydroxide as a precipitate
- Turns
- Calcium
ions (white)
- Magnesium
ions (white)
- Aluminium
ions (white)
- When excess sodium hydroxide
is added, the precipitate dissolves
- When excess sodium hydroxide
is added, the precipitate dissolves
- Copper ions (blue)
- Iron (ii) (green)
- Iron (iii) (brown)
- Calcium
ions (white)
- Balanced ionic
equation example
- Fe3+(aq) + 3OH-(aq) --> Fe(OH)3(s)
- Fe3+(aq) + 3OH-(aq) --> Fe(OH)3(s)
- Added to solution
of metal ions
- Flame test
- Negative ions
- Carbonate ions
- Add dilute
hydrochloric acid
- If fizzes and turns limewater
milky, the substance contains
carbonate ions
- If fizzes and turns limewater
milky, the substance contains
carbonate ions
- 2HCl(aq) + CaCO3(s) --> CaCl2(aq) + H2O(l) + CO2(g)
- Add dilute
hydrochloric acid
- Halide ions
- Add dilute nitric acid and
then silver nitrate solution
- Precipitate forms
- Precipitate forms
- AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq)
- Turns
- Chloride ions (white)
- Bromide ions (cream)
- Iodine ions (yellow)
- Chloride ions (white)
- Add dilute nitric acid and
then silver nitrate solution
- Sulphate ions
- Add dilute hydrochloric acid and then
barium chloride chloride solution
- Precipitate forms
- Precipitate forms
- Turns
- Sulphate ions (white)
- Sulphate ions (white)
- BaCl2(aq) + MgSO4(aq) --> BaSO4(s) + MgCl2 (aq)
- Add dilute hydrochloric acid and then
barium chloride chloride solution
- Carbonate ions
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