Chemistry 9701/51 May June 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Preparing a 0.200 mol/dm³ NaCl solution by accurately measuring and dissolving NaCl to achieve a desired volume.
2. Describing how to weigh NaCl by difference and ensuring precise measurement for accurate titration results.
3. Carrying out titrations to determine the reaction volume between sodium chloride and a lead compound, analyzing the formation of a precipitate.
4. Addressing experimental weaknesses by suggesting additional steps to improve accuracy and reliability of the results.
5. Identifying the correct molar ratio of NaCl to lead compound from titration data and graph interpretation.
6. Modifying the experimental setup to avoid potential errors and ensuring the consistency of results.