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Transition Metals

Metal aqua ionColour
[Co(H2O)6]2+ Pink solution
[Co(H2O)6]2+ added 2OH/NH3 [Co(H2O)4(OH)2] Blue/green precipitate insoluble in XS OH-
[Co(H2O)4(OH)2] XS 6NH3 [Co(NH3)6]2+ Straw solution
[Co(H2O)6]2+ + CO3 2- CoCO3 Pink precipictate
[CoCl4]2- Blue solution
[Cu(H2O)6]2+ Blue solution
[Cu(H2O)4(OH)2] Blue precipitate insoluble in XS OH-
[Cu(H2O)4(OH)2] XS 4NH3 [Cu(H2O)2(NH3)4]2+ Royal deep blue solution
CuCO3 Green/blue precipitate
[CuCl4]2- yellow solution
[Fe(H2O)6]2+ Green solution
[Fe(H2O)4(OH)2] Green precipitate insoluble in XS OH-/NH3
FeCO3 Green precipitate
[Al(H2O)6]3+ Colourless solution
[Al(H2O)6]3+ (added 3OH/NH3) [Al(H2O)3(OH)3] White precipitate insoluble in XS NH3
[Al(H2O)3(OH)3] XS 6OH- [Al(OH)6]3- Colourless solution
2[Al(H2O)6]3+ +3CO3 2- 2[Al(H2O)3(OH)3] white precipitate
[Cr(H2O)6]3+ Violet solution
[Cr(H2O)6]3+(added 3OH/NH3) [Cr(H2O)3(OH)3]Green precipitate
[Cr(H2O)3(OH)3] XS 6OH- [Cr(OH)6]3- Green solution
[Cr(H2O)3(OH)3] XS 6NH3 [Cr(NH3)6]3+ Purple solution
2[Cr(H2O)6]3+ +3CO3 2- 2[Cr(H2O)3(OH)3]Green precipitate
[Fe(H2O)6]3+ Yellow solution
[Fe(H2O)6]3+ (added 3OH/NH3) [Fe(H2O)3(OH)3] brown precipitate insoluble in XS OH/NH3
2[Fe(H2O)6]3+ +3CO3 2- 2[Fe(H2O)3(OH)3] brown precipitate
Created by: Carrie Wong ^.^