A manufacturer makes two fertilisers from phosphate rock using different processes. Equal 100 g samples of the fertilisers are analysed.
| Fertiliser | Mass of phosphorus compounds in the sample (g) | Percentage of the phosphorus compounds that are soluble (%) |
|---|---|---|
| A | 24.0 | 25 |
| B | 16.0 | 75 |
A grower will use the same mass of either fertiliser A or fertiliser B.
Explain which fertiliser is expected to provide more phosphorus compounds that can be taken up by the crop.
71 exam-style questions on AQA GCSE Chemistry 10.4 The Haber process and the use of NPK fertilisers, covering 10.4.1a The Haber process, 10.4.1b Equilibrium and rate in the Haber process, and 10.4.2 Production and uses of NPK fertilisers. Each one has a worked solution and a mark scheme showing where the marks go.