A chemical manufacturer makes the same amount of descaling agent per batch using either route. Route M has an atom economy of 92% and takes 18 hours per batch. Route N has an atom economy of 68% and takes 40 minutes per batch. Why might the manufacturer reject Route M?
Route M's higher atom economy means it forms more by-products
Route M's higher atom economy means it takes longer to reach equilibrium
Route M's slow rate means it makes less product per hour
Route M's longer batch time means less of its product is recovered
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.