A water-treatment chemical can be manufactured by two routes that use the same expensive raw material. Route C has an atom economy of 94% and a moderate rate. Route D has an atom economy of 57% and a fast rate. Why might Route C be chosen?
Route C's higher atom economy could make its percentage yield higher than Route D's
Route C's costly raw material could make its equation more atom-efficient than Route D's
Route C wastes less costly raw material, which could outweigh Route D's faster rate
Route C's moderate rate means its equilibrium must contain more product than Route D's
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.