Two laboratories make compound R using the same reaction. One laboratory works more carefully and collects a greater mass of R.
Which statement about the atom economy of the two reactions is correct?
It is the same for both, because both laboratories collect the same mass of R.
It is higher for the careful laboratory, because it collects a greater mass of R.
It is higher for the careful laboratory, because fewer side reactions take place.
It is the same for both, because it is calculated from the balanced equation.
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.