A student investigated the rate of reaction between calcium carbonate chips and dilute hydrochloric acid. The volume of carbon dioxide gas produced over time was recorded in the table below:
| Time in seconds | Volume of carbon dioxide produced in cm3\text{cm}^3cm3 |
|---|---|
| 0 | 0 |
| 10 | 18 |
| 20 | 32 |
| 30 | 42 |
| 40 | 48 |
| 50 | 50 |
Identify the average rate of reaction in the first 30 seconds in cm3/s\text{cm}^3/\text{s}cm3/s.
0.710.710.71
1.41.41.4
4.24.24.2
424242
87 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.