A chemical gas generator is used to inflate a rescue marker. During testing, the same amounts of reactants were used at each temperature. The time taken to collect the first 24 cm3 of gas was recorded.
| Temperature in ∘C^\circ\text{C}∘C | Time in s\text{s}s |
|---|---|
| 10 | 160 |
| 30 | 50 |
Calculate the mean rate of reaction at each temperature.
Give your answers in cm3/s\text{cm}^3\text{/s}cm3/s.
Explain why the mean rate of reaction is greater at 30 ∘C30\ ^\circ\text{C}30 ∘C than at 10 ∘C10\ ^\circ\text{C}10 ∘C.
127 exam-style questions on AQA GCSE Chemistry 6.1 Rate of reaction, covering 6.1.1a Calculating rates of reactions, 6.1.1b Gradient of a tangent as rate, 6.1.2 Factors which affect the rates of chemical reactions, 6.1.3 Collision theory and activation energy, and 6.1.4 Catalysts. Each one has a worked solution and a mark scheme showing where the marks go.