Name the four transition metal ions that you are expected to have detailed chemical knowledge of.
This knowledge includes:
- The structure of their hexaaqua ions
- The colours of the hexaaqua ion solutions
- The reactions of the hexaaqua ion solutions with other reagents
- The colour and state changes associated with these reactions
- The structure of complexes that they form with other reagents
When copper (II) sulfate dissolves in water, the conventional equation for this is represented as
CuSO4 (s) + aq → Cu2+ (aq) + SO4- (aq)
Write the equation for the same reaction showing the formation of the hexaaquacopper (II) ion.
Draw the structure of the hexaaquacopper (II) ion complex.
Hexaaquacobalt (II) ions react with an excess of hydrochloric acid in the following ligand substitution reaction.
[Co(H2O)6]2+ (aq) + 4Cl - (aq) ⇌ [CoCl4]2- (aq) + 6H2O (l)
Explain why the initial and final cobalt (II) complexes in the equation above have different shapes.
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