A company can make product X by two routes.
Route 1 has an atom economy of 85 % and a percentage yield of 40 %.
Route 2 has an atom economy of 60 % and a percentage yield of 90 %.
Which statement is correct?
Route 1 changes more reactant atoms into X, and loses less X in the process
Route 2 changes fewer reactant atoms into X, but obtains more of the X expected
Route 1 makes less waste product, so it must also give the larger mass of X
Route 2 makes less waste product, and it obtains more of the X expected
39 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.