Edexcel IAL Chemistry A2 17.11 transition-metal colour changes
Edexcel IAL Chemistry A2 17.11 transition-metal colour changes
Link the visible colour change to the chemical change first: oxidation state, ligand identity or hydration can alter the d-orbital energy gap or the ion present.
How this is tested
- Explain colour changes from different oxidation states such as Fe2+ to Fe3+.
- Link ligand exchange or hydration changes to a different d-orbital energy gap.
- Classify reactions as ligand exchange, redox or neutralisation from observations.