An industrial process uses a solid catalyst to increase the rate of a reaction.
Two batches contain the same total volume of the catalyst. Each batch is made of identical cubic particles.
| Batch | Length of each side of a particle in nm\text{nm}nm | Total volume of catalyst in nm3\text{nm}^3nm3 |
|---|---|---|
| P | 20 | 1.00 × 1021 |
| Q | 50 | 1.00 × 1021 |
Calculate the total surface area of all the catalyst particles in each batch.
Give both answers in nm2\text{nm}^2nm2.
Predict which batch would increase the reaction rate more.
Use your answers from part (a) to explain your prediction.
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.