A technician collects product P in a dish. The theoretical yield of P is 8.40 g.
The empty dish has a mass of 24.60 g. The technician heats the dish and product several times.
| Measurement | Mass of dish and product / g |
|---|---|
| Before heating | 33.65 |
| After first heating | 33.05 |
| After second heating | 32.85 |
| After third heating | 32.85 |
Calculate the percentage yield of dry product 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.