A manufacturer makes a solid product in a batch reaction. The reaction mixture is transferred to filtering apparatus and the solid is then dried. Analysis gives these results.
| Quantity | Mass / g |
|---|---|
| Calculated theoretical yield | 25.0 |
| Product present in the reaction mixture before transfer | 22.5 |
| Pure, dry product collected | 19.5 |
Calculate the percentage of the theoretical yield that was lost during transfer and filtering.
Explain why this practical loss does not account for all of the difference between the theoretical yield and the actual yield.
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.