A reaction between two gases was investigated in three experiments.
The starting amounts of both gases and the temperature were the same in each experiment.
| Experiment | Initial pressure in kPa | Catalyst |
|---|---|---|
| A | 100 | none |
| B | 200 | none |
| C | 100 | X |
More product was formed in experiment B than in experiment A during the first 20 seconds.
Explain why.
Experiments A and C are each allowed to continue until the reaction is complete.
Predict how the final amount of product in experiment C compares with the final amount in experiment A.
Explain why more product was formed in experiment C during the first 20 seconds.
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.