A research team is preparing an intermediate for use in a later synthesis. Calculations from the starting materials predict that no more than 27.5 g can be formed. After the reaction mixture has been processed, 19.8 g of purified intermediate is isolated.
Calculate the percentage yield of the preparation.
104 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.