Edexcel IAL Chemistry 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.

Exam points

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.

[Maximum number: 2]

The diagram summarises some reactions of copper compounds.

Figure for Question 17.11—Colour changes in transition metal ions may arise as a result of changes in: i oxidation number of the ion ii ligand iii question 1 — Edexcel A-Level Chemistry A2

T and V are the same type of chemical species.

Suggest an explanation for the change of V into T on shaking.

All question bank results loaded

17.11—Colour changes in transition metal ions may arise as a result of changes in: i oxidation number of the ion ii ligand iii question 1