Chemistry 9701/36 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculating the concentration of dilute hydrochloric acid by titrating it against potassium carbonate after further dilution.
2. Performing titrations with precise measurements of burette readings to determine the volume of acid required for neutralization.
3. Understanding the stoichiometry of the titration reaction and calculating the concentration of HCl in the original solution.
4. Analyzing the effects of using hydrated potassium carbonate in the titration and its impact on titre results.
5. Discussing how errors in the pipetting or dilution process can be corrected to ensure accurate results.
6. Determining the enthalpy change for reactions involving hydrated sodium carbonate, using Hess's Law to find the enthalpy of dehydration.