A manufacturer tests three forms of the same catalyst. The same mass of each form is used under the same conditions. The table shows the time taken to produce 50 cm³ of gas.
| Particle diameter in nm | Time taken in s |
|---|---|
| 40 | 24 |
| 400 | 68 |
| 4000 | 180 |
Explain which form of the catalyst the manufacturer should choose to make the reaction faster.
104 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.