A water-treatment compound is made as a solid product.
The table shows data from one batch.
| Measurement | Mass in kg |
|---|---|
| Maximum theoretical mass of product | 1.80 |
| Empty drying tray | 0.65 |
| Drying tray and product before drying | 2.54 |
| Water removed during drying | 0.24 |
Calculate the percentage yield of dry product.
A trainee calculates the percentage yield using the mass of the product before drying.
Explain why the value calculated is not a valid percentage yield.
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.