A reaction forms a gas that is very soluble in water. A student follows the reaction by recording the volume of gas produced at regular intervals.
| time in s | gas volume in cm3\text{cm}^3cm3 |
|---|---|
| 15 | 18 |
| 35 | 42 |
Explain which apparatus the student should use to measure the volume of gas rather than collecting the gas over water.
Calculate the mean rate of production of the gas between 15 s and 35 s.
Give the unit.
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.