Complex Ions- Cr 3+ Chromium complexes and colours 2.5 / 5 based on 2 ratings ? ChemistryBonding & shapesA2/A-levelAQA Created by: RozieCreated on: 02-02-13 14:04 Chromium aqua complex? Colour? [Cr(H2O)6]2+, Dark Green Solution 1 of 6 Chromium complex formed with NaOH? Colour? [Cr(H20)3(OH)3], Grey-Green Precipitate 2 of 6 Chromium complex formed with excess NaOH? Colour? [Cr(OH)6]3-, Green Solution 3 of 6 Chromium complex formed with NH3? Colour? [Cr(H20)3(OH)3], Grey-Green Precipitate 4 of 6 Chromium complex formed with excess NH3? Colour? [Cr(MH3)6]3+, Lilac Solution 5 of 6 Chromium complex formed with sodium carbonate (Na2CO3)? Colour? [Cr(H20)3(OH)3], Grey-Green Precipitate 6 of 6
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