During the synthesis of a pharmaceutical precursor, a theoretical stoichiometry calculation indicated that 3.20 kg of the compound should be produced.
After recrystallisation and drying, the actual mass of the purified precursor recovered was 2496 g.
Calculate the percentage yield of the precursor.
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.