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TM solution colours
AQA A-level chemistry transition metals coloured solutions year 13
| Term | Definition |
|---|---|
| [Fe(H2O)6]2+ (aq) | Green solution |
| [Cu(H2O)6]2+ (aq) | Blue solution |
| [Fe(H2O)6]3+ (aq) | Purple solution, may look yellow brown due to OH- contamination |
| [Al(H2O)6]3+ (aq) | Colourless solution |
| [Fe(H2O)4(OH)2] (s) | Green precipitate which goes brown on contact with air |
| [Cu(H2O)4(OH)2] (s) | Blue precipitate |
| [Fe(H2O)3(OH)3] (s) | Brown precipitate which may look orange |
| [Al(H2O)3(OH)3] (s) | White precipitate |
| [Cu(H2O)2(NH3)4]2+ (aq) | Deep blue solution |
| [FeCO3] (s) | Green precipitate |
| [CuCO3] (s) | Blue-green precipitate |
| [VO2(H2O)4)]+ V (V) | Yellow solution |
| [VO(H2O)5]2+ V (IV) | Blue solution |
| [V(H2O)6]3+ V (III) | Green solution |
| [V(H2O)6]2+ V (II) | Purple solution |
| Way of remembering vanadium oxidation states and corresponding colours | 5. (V) You (Yellow) 4. (IV) Better (Blue) 3. (III) Get (Green) 2. (II) Prepared (Purple) |
| Ligand corresponding names: Water Chloride Ammonia Hydroxide Hydrogen Cyanide | Ligands: Aqua Chloro Ammine Hydroxo Hydrido Cyano |
| Negatively charged cation complex metal names: Silver Copper Iron Manganese Chromium Cobalt Vanadium Zinc | Negatively charged complexes: Argentate Cuprate Ferrate Manganate Chromate Cobaltate Vanadate Zincate |
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