A student records the colours of solutions of two iron compounds.
| Compound | Colour of solution |
|---|---|
| iron(II) sulfate | pale green |
| iron(III) chloride | orange-brown |
Explain why the two solutions have different colours.
113 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.