A reaction has a percentage atom economy of 90 % and a percentage yield of 40 %. Which statement about this reaction is correct?
Most of the reactant is converted into product, and most of the reactant atoms are wasted
Most of the reactant is converted into product, but few of the reactant atoms are wasted
Most of the reactant atoms end up in the product, and most of the reactant is converted
Most of the reactant atoms end up in the product, but little of the reactant is converted
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.