Colours of Ions in Solution Table with Formulas and Observations

This is a table I made containing all of the colours of ions in solution, and their colours after they have been reacted with the reactants we need to know.

There are a wide range of colours available on the mark scheme but I referenced this against an official AQA table so these will definitely be accepted.

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  • Created by: Joe Bush
  • Created on: 20-05-16 20:17
Preview of Colours of Ions in Solution Table with Formulas and Observations

First 268 words of the document:

Metal Aqueous Ion Limited NaOH Excess Excess Na
2CO3 HCl
Limited NH 3 NaOH NH 3
Fe2+ [Fe(H
2O)6] 2+
Fe(H
2O) 4(OH)
2 FeCO 3
Green Green Green
Solution
Precipitate· Precipitate
Cu2+ [Cu(H
2O) 6]
2+
Cu(H
2O) 4(OH)
2 [Cu(NH 3)
4(H
2O) 2]
2
CuCO 3 [CuCl 4]
2
+
Blue Solution Blue BlueGreen YellowGree
Precipitate Deep Blue Precipitate n Solution
Solution
Co2+ [Co(H2O) 6
]2+ Co(H 2O)4 (OH)2 [Co(NH3 )6
]2+
CoCO 3 [CoCl 4]2
Pink Solution Blue YellowBrown Pink Precipitate Blue
Precipitate Solution° Solution
Fe3+ [Fe(H
2O) 6]
3+
Fe(H
2O) 3(OH)
3 Fe(H
2O) 3(OH)
3
Purple Brown Brown Precipitate
Solution Precipitate CO 2 Effervescence
Al3+
[Al(H2
O)6
]3+
Al(H2
O)3
(OH)3
[Al(OH) 4]
Al(H2
O)3
(OH)3
Colourless White Colourless White Precipitate
Solution Precipitate Solution CO 2 Effervescence
Cr3+ [Cr(H
2O)6] 3+
Cr(H
2O) 3(OH)
3 [Cr(OH) 6] 3
[Cr(NH 3) 6] 3+
Cr(H
2O)3(OH)
3
Violet Green Green Violet Solution Green Precipitate
Solution Precipitate Solution* CO 2 Effervescence
· 2+
Goes brown in air or H
2O
2: Fe
is oxidised to Fe3+
2+
°Goes brown in air or H 2O 2: Co
is oxidised to Co3+
4 (then the dichromate equilibrium is established)
3+ 2
*Goes yellow in H
2O
2: Cr oxidised to CrO

Comments

11nayset

great 

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