A student investigates the effect of the concentration of solution A on the rate of a reaction. The same volume of solution A is used each time. The temperature and all other conditions are kept the same.
The student measures the volume of gas produced after 20 seconds.
| Concentration of solution A in mol/dm³ | Volume of gas produced after 20 seconds in cm³ |
|---|---|
| 0.30 | 18 |
| 0.60 | 31 |
Explain how the results show that the mean rate is greater at the higher concentration. Explain this difference in terms of particles.
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.