In the synthesis of the pharmaceutical drug ibuprofen, a chemical plant is designed such that a starting batch of reactants should theoretically produce a maximum of 315.0 kg315.0\text{ kg}315.0 kg of ibuprofen. Following the multi-step reaction and purification process, the plant actually yields 248.5 kg248.5\text{ kg}248.5 kg of pure ibuprofen.
Calculate the percentage yield of ibuprofen for this batch. Give your answer to 3 significant figures.
Use the equation:
percentage yield=mass of product actually mademaximum theoretical mass of product×100 \text{percentage yield} = \frac{\text{mass of product actually made}}{\text{maximum theoretical mass of product}} \times 100 percentage yield=maximum theoretical mass of productmass of product actually made×10031 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1 Percentage yield and 3.3.2 Atom economy. Each one has a worked solution and a mark scheme showing where the marks go.