A student carries out a reaction to prepare a solid product. The theoretical yield is 16.0 g and the percentage yield is 75.0%. The product is separated from the reaction mixture by filtration.
Use the equation
actual yield=percentage yield100×theoretical yield \text{actual yield} = \frac{\text{percentage yield}}{100} \times \text{theoretical yield} actual yield=100percentage yield×theoretical yieldCalculate the mass of dry product collected.
The student transfers the product from the filter paper to a weighing boat. Explain why leaving some product on the filter paper reduces the percentage 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.