A catalyst is added to a reaction mixture to increase the rate of reaction. Which row in the table shows the effect of the catalyst on the activation energy of the reaction and on the mass of the catalyst at the end of the reaction?
| Row | Effect on activation energy | Mass of catalyst at the end |
|---|---|---|
| A | increases | remains the same |
| B | decreases | decreases |
| C | decreases | remains the same |
| D | increases | decreases |
Row A
Row B
Row C
Row D
31 exam-style questions on OCR GCSE Chemistry Controlling reactions. Each one has a worked solution and a mark scheme showing where the marks go.