A sample of green copper(II) carbonate is heated strongly in a boiling tube until the thermal decomposition is complete and only a black residue of copper(II) oxide remains.
The actual mass of copper(II) oxide obtained is 4.14 g.
The theoretical yield of copper(II) oxide for this reaction is 4.50 g.
Calculate the percentage yield of copper(II) oxide.
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.