Using a specific mass of glucose in an industrial fermentation process, it was calculated that a theoretical mass of 250 tonnes250\text{ tonnes}250 tonnes of ethanol could be made.
The actual mass of ethanol produced by the bioreactor was 215 tonnes215\text{ tonnes}215 tonnes.
Calculate the percentage yield of ethanol.
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.