Chemistry 9701/13 May June 2023 | Cambridge AS Level Past Papers With Mark Scheme

1. Identification of reagent X used in the reaction of propanoic acid to form sodium propanoate.
2. Calculation of the percentage by mass of calcium carbonate in a rock sample neutralized by hydrochloric acid.
3. Determination of correct bond angles and shape in the ammonium ion (NH4⁺).
4. Explanation of the relationship between temperature and Kw (ionic product of water) with relevant calculations.
5. Analysis of the effect of various changes in conditions (e.g., pressure, temperature) on equilibrium and reaction rates.
6. Investigation of molecular structures and reaction mechanisms, including hydration, isomerism, and polymerization.