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2. Mn(H2O)4(OH)2

  • Brown precipitate
  • Green precipitate
  • Blue precipitate
  • White precipitate

3. [Fe(H2O)6]2+ + excess OH-

  • green solution
  • brown solution
  • green precipitate
  • brown precipitate

4. [Cu(H2O)6]2+

  • Colourless solution
  • Green solution
  • Blue solution
  • Yellow solution

5. solutions with excess NH3

  • Cu2+,Cr3+,Ni2+,ZN2+
  • Cu2+,Fe2+,Cr3+,Ni2+,ZN2+
  • Cu2+,Cr3+,Ni2+
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