During a stock check at a chemical supplier, a quality-control chemist has three coded bottles, P, Q and R. The bottles contain chlorine water, bromine water and iodine solution, one in each bottle.
The chemist tests P and Q by adding potassium halide solutions. The results are shown in the table.
| Halogen solution tested | Potassium halide solution added | Result |
|---|---|---|
| P | potassium bromide solution | reaction |
| Q | potassium iodide solution | reaction |
Use the results to explain which halogen is in solution Q.
Explain whether solution R would react with potassium bromide 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.