Chemistry 9701/52 March 2023 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of mean titre from experimental results and completing the titration table.
2. Definition of a standard solution and explanation of necessary steps in preparing solutions.
3. Analysis of the reasons for shaking and leaving the reaction mixture in conical flask A, as well as handling of sulfuric acid.
4. Explanation of color change at the endpoint of titration and the impact of varying KMnO4 concentration on the titre.
5. Calculation of the concentration of Fe2+ in equilibrium mixture and the use of equilibrium constants (Kc).
6. Experimental design improvements and investigation of reaction order, including calculations using titration data and reaction mechanisms.