A chemical plant makes a dye intermediate in four batches. The table shows the theoretical yield and the percentage yield of each batch.
| Batch | Theoretical yield / g | Percentage yield / % |
|---|---|---|
| P | 40 | 70 |
| Q | 32 | 85 |
| R | 36 | 80 |
| S | 45 | 60 |
Which batch produced the greatest mass of the dye intermediate?
Batch Q
Batch R
Batch S
Batch P
151 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.