Which expression calculates percentage yield?
actual yieldtheoretical yield×100\dfrac{\text{actual yield}}{\text{theoretical yield}}\times100theoretical yieldactual yield×100
theoretical yieldactual yield×100\dfrac{\text{theoretical yield}}{\text{actual yield}}\times100actual yieldtheoretical yield×100
actual yield+theoretical yield\text{actual yield}+\text{theoretical yield}actual yield+theoretical yield
wasteproduct\dfrac{\text{waste}}{\text{product}}productwaste
157 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.