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

  • colourless solution
  • purple solution
  • Green solution
  • white solution

7. [Ni(H2O)6]2+ +excess OH-

  • Blue solution
  • Green precipitate
  • Purple solution
  • Green solution

8. [Mn(H2O)6]2+ +excess OH-

  • Brown precipitate
  • Brown solution
  • Purple solution
  • Green solution

9. solutions with excess OH-

  • Cr3+,Fe2+
  • Cr3+,Mn2+
  • Cr3+, ZN2+
  • Cr3+,Ni2+

10. Fe3+(metal aqua ion, then adding OH- or NH3, excess OH-, excess NH3)

  • Yellow solution-->brown ppt-->brown ppt-->brown ppt
  • Green solution-->green ppt-->green ppt-->green ppt
  • Yellow solution-->brown ppt-->brown ppt-->brown solution
  • Green solution-->green ppt-->green ppt-->green solution

11. [Fe(H2O)6]3+

  • Blue solution
  • Yellow solution
  • Green solution
  • White solution

12. [Cr(H2O)6] + excess OH-

  • Green solution
  • Green precipitate
  • Brown solution
  • Brown precipitate

13. Mn(metal aqua ion, then adding OH- or NH3, excess OH-, excess NH3)

  • Very pale pink solution-->Brown ppt-->brown solution-->brown ppt
  • Very pale pink solution-->Brown ppt-->brown ppt-->brown ppt
  • Very pale pink solution-->Brown ppt-->brown ppt-->purple solution
  • Very pale pink solution-->Brown ppt-->brown solution-->purple solution

14. [Cr(H2O)6]3+ (violet but after hydrolysis is?)

  • Yellow Solution
  • Green solution
  • Very pale pink solution
  • Blue solution

15. [Ni(H2O)6]2+

  • Very pale pink solution
  • Green solution
  • Yellow solution
  • Blue solution

16. Ni(metal aqua ion, then adding OH- or NH3, excess OH-, excess NH3)

  • Blue solution-->green ppt-->Green ppt-->Blue solution
  • Green solution-->green ppt-->Green ppt-->Blue solution
  • Green solution-->green ppt-->Green ppt-->green solution
  • BLue solution-->blue ppt-->Blue ppt-->Blue solution

17. Cr(metal aqua ion, then adding OH- or NH3, excess OH-, excess NH3)

  • Violet/Green-->green ppt-->green solution-->purple solution
  • Violet/Green-->green ppt-->green ppt-->purple solution
  • Violet/Green-->green ppt-->green ppt-->green solution
  • Violet/Green-->green ppt-->green solution-->green solution

18. [Fe(H2O)6]3+ +excess NH3

  • Green solution
  • Brown solution
  • Brown precipitate
  • Green precipitate

19. [Mn(H2O)6]2+ +excess NH3

  • green solution
  • Brown precipitate
  • Purple solution
  • Brown solution

20. Cu(H20)4(OH)2

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