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2. Copper 2+ and conc OH

  • orange
  • blue gelatenous ppt
  • pale blue ppt
  • green

3. Chromium 3+ and dilute OH

  • yellow
  • green gelatenous ppt
  • green ppt
  • blue ppt

4. Iron 3+ and conc ammonia

  • yellow solution
  • green solution
  • brown gelatenous ppt
  • blue green ppt

5. Copper 2+ and dilute OH

  • blue gelatenous ppt
  • pale blue ppt
  • green
  • orange
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