Chemical testings for positive metal ions
- Created by: Katy **
- Created on: 23-04-14 15:54
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- Metal ions
- Flame test
- Group 1
- Sodium
- yellow flame
- Potassium
- lilac flame
- Sodium
- Group 2
- Calcium
- brick red flame
- Calcium
- Copper
- green flame
- Group 1
- Adding Sodium hydroxide solution to a solution of metal ion
- Iron II ions
- Fe2+
- pale green
- Iron II + Sodium hydroxide ? Iron II hydroxide
- Iron II hydroxide ppt formed
- dark green
- Fe2+
- Iron III ions
- Fe3+
- yellow
- Iron III + Sodium hydroxide ? iron III hydroxide
- Fe3+(aq) + 3OH-(aq) ? Fe(OH)3(s)
- ionic equation
- Fe3+(aq) + 3OH-(aq) ? Fe(OH)3(s)
- Iron III hydroxide ppt formed
- brown
- Fe3+
- Copper II ions
- Cu2+
- blue solution
- Copper II + Sodium hydroxide ? Copper II hydroxide
- Cu2+(aq) + 2OH-(aq) ? Cu(OH)2(s)
- ionic equation
- Cu2+(aq) + 2OH-(aq) ? Cu(OH)2(s)
- Copper II hydroxide ppt formed
- blue
- Cu2+
- Spectator ions
- ions that are not seen
- Copper II sulfate + Sodium hydroxide ? Copper II hydroxide + Sodium sulfate
- CuCO4 + 2NaOH ? Cu(OH)2 + Na2SO4
- Na & SO4 are spectator ions
- CuCO4 + 2NaOH ? Cu(OH)2 + Na2SO4
- Iron II ions
- Flame test
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