A cleaning powder reacts with water to produce a gas. The gas is collected in a gas syringe. The mixture is left under the same conditions.
| time in s | volume of gas in cm3\mathrm{cm^3}cm3 |
|---|---|
| 40 | 25 |
| 80 | 40 |
| 120 | 40 |
Calculate the mean rate of gas production between 40 s and 80 s.
Predict the volume of gas in the gas syringe at 160 s. Explain 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.