Chemistry 9701/43 May June 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Solubility trends of Group 2 sulfates and reactions with dilute sulfuric acid.
2. Calculation of the solubility of BaSO4 and its comparison to Cs2SO4's lattice energy.
3. Determining the enthalpy change of dehydration for barium hydroxide reactions and calculating the minimum temperature for feasibility.
4. Definition of transition elements and their chemical properties with examples of catalytic and electrode reactions.
5. Explanation of reaction mechanisms, such as the chlorination of pyridine, and the significance of hybridisation in molecules.
6. Analysis of acidities in organic compounds and comparison of their reactions with sodium and other reagents.