A reaction involving dissolved reactant R produces a gas. A chemist changes the concentration of R and measures the initial rate of the reaction. All other conditions are kept the same.
| Concentration of R in mol/dm³ | Initial rate in cm³/s |
|---|---|
| 0.15 | 0.60 |
| 0.30 | 1.20 |
| 0.45 | 1.80 |
The concentration of R is increased to 0.75 mol/dm³.
Predict the initial rate of the reaction. Explain your prediction using the data and collision theory.
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.