A manufacturer makes a solid pigment in a reaction. The mass of dry pigment collected is less than the maximum theoretical mass.
Which statement gives the best explanation for the difference between the collected mass and the maximum theoretical mass?
The pigment was dried completely before its mass was measured.
The theoretical mass was calculated using the limiting reactant.
The equation predicted a by-product as well as the pigment.
Some pigment remained on the filter paper when the product was transferred.
104 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.