A student investigates how temperature affects the rate of a reaction that produces a gas. The table shows the mean rate of gas production at three temperatures.
| Temperature / °C | Mean rate of gas production / cm³/s |
|---|---|
| 25 | 0.42 |
| 35 | 0.81 |
| 45 | 1.58 |
The student plans to repeat the experiment at 55 °C.
Calculate an estimate for the rate of gas production at 55 °C. Explain, using collision theory, why the rate increases as the temperature rises.
122 exam-style questions on OCR GCSE Chemistry 5.2 Controlling reactions, covering 5.2.1 Measuring and interpreting rate of reaction, 5.2.2 Factors affecting rate and collision theory, and 5.2.3 Catalysts, activation energy and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.