A materials laboratory tests three unidentified metals, P, Q and R. Equal masses of each metal powder are added separately to fresh samples of T sulfate solution. The samples have the same volume, concentration and starting temperature. Each metal reacts with T sulfate solution.
The table shows the temperature rise in each test.
| Metal powder | Temperature rise |
|---|---|
| P | 14.2 ∘C14.2\ ^{\circ}\text{C}14.2 ∘C |
| Q | 8.6 ∘C8.6\ ^{\circ}\text{C}8.6 ∘C |
| R | 3.8 ∘C3.8\ ^{\circ}\text{C}3.8 ∘C |
Explain what the results show about the reactivity of P, Q and R.
Use your answer to predict whether R would displace Q from Q sulfate solution.
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.