Chemical testings for positive metal ions

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  • 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
      • Group 2
        • Calcium
          • brick red flame
      • Copper
        • green flame
    • 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
      • Iron III ions
        • Fe3+
          • yellow
        • Iron III + Sodium hydroxide ? iron III hydroxide
          • Fe3+(aq) + 3OH-(aq) ? Fe(OH)3(s)
            • ionic equation
        • Iron III hydroxide ppt formed
          • brown
      • Copper II ions
        • Cu2+
          • blue solution
        • Copper II + Sodium hydroxide ? Copper II hydroxide
          • Cu2+(aq) + 2OH-(aq) ? Cu(OH)2(s)
            • ionic equation
        • Copper II hydroxide ppt formed
          • blue
      • 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

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