Two colourless solutions react to form a blue product. The same volume and concentration of each solution are used in experiments J and K. In each experiment, the time taken for the mixture to reach the same fixed colour intensity is measured.
| experiment | temperature in °C | time to reach the fixed colour intensity in s |
|---|---|---|
| J | 18 | 84 |
| K | 28 | 42 |
Compare the rate of reaction in experiment K with the rate of reaction in experiment J. Use the data in the table.
Explain why the higher temperature in experiment K causes this difference in rate.
Predict how the final amount of blue product formed in experiment K compares with the final amount formed in experiment J. Justify your answer.
122 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.