Edexcel IAL Chemistry A2 17.24 ligand exchange and colour changes
Edexcel IAL Chemistry A2 17.24 ligand exchange and colour changes
Track which ligand replaces water: ammonia can form deep-blue copper ammine complexes, while chloride forms yellow or blue chloro complexes depending on the metal.
How this is tested
- Write ligand exchange equations for copper, cobalt or platinum complex ions.
- Identify deep-blue tetraamminecopper(II) and yellow tetrachlorocuprate(II) species.
- Describe colour changes as water ligands are replaced by NH3, Cl- or other ligands.