A materials-testing laboratory compares four unidentified metal samples, A, B, C and D. Each sample is added to separate samples of zinc sulfate solution, iron(II) sulfate solution and copper(II) sulfate solution under the same conditions.
In the table, "reaction" means that a displacement reaction occurs and "no reaction" means that no displacement is observed.
| Sample | Zinc sulfate solution | Iron(II) sulfate solution | Copper(II) sulfate solution |
|---|---|---|---|
| A | no reaction | no reaction | reaction |
| B | reaction | reaction | reaction |
| C | no reaction | no reaction | no reaction |
| D | no reaction | reaction | reaction |
Use the results in the table to give the order of reactivity of the samples, from most reactive to least reactive. Explain how the results justify the positions of the samples.
Predict whether sample A would displace sample D from a solution of the sulfate of D.
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.