Chemistry 9701/52 May June 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Determining the molar volume of hydrogen gas by reacting magnesium with hydrochloric acid and collecting the hydrogen gas over water.
2. Preparing magnesium ribbon for the reaction and handling potential oxide layers on the surface.
3. Using titration data to calculate the volume of acid required and the reaction's efficiency.
4. Analyzing possible errors, such as gas collection inaccuracies, and suggesting improvements to experimental procedures for more reliable results.
5. Investigating the effect of temperature on the decomposition rate of hydrogen peroxide in the presence of potassium iodide, including how to prepare solutions and safely handle chemicals.
6. Conducting experiments to find the activation energy of the reaction and using experimental results to deduce the reaction's rate law.