A manufacturer makes magnesium carbonate by reacting magnesium chloride solution with sodium carbonate solution. The solid is collected by filtration.
magnesium chloride + sodium carbonate → \rightarrow\,→ magnesium carbonate + sodium chloride
The atom economy for magnesium carbonate is 42%. One batch has a percentage yield of 86%.
The manufacturer wants to improve the process. Which statement is correct?
Reducing the losses during filtration could raise the percentage yield, while the atom economy stays at 42%42\%42%
Using more concentrated solutions could raise the atom economy, while the percentage yield stays at 86%86\%86%
Reducing the losses during filtration could raise the atom economy, while the percentage yield stays at 86%86\%86%
Selling the sodium chloride formed could raise the percentage yield, while the atom economy stays at 42%42\%42%
151 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.