Chemistry 9701/31 Oct Nov 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Enthalpy change calculations for reactions involving magnesium, sulfuric acid, copper(II) sulfate, and copper, using Hess' Law.
2. Graphical analysis of temperature change during chemical reactions to determine reaction enthalpy, including interpolation for precise measurements.
3. Qualitative analysis of cations and anions using precipitation reactions, solubility tests, and reagent selection for ion identification.
4. Techniques to improve experimental accuracy in calorimetric measurements and error analysis in temperature-related data.
5. Use of standard qualitative analysis notes to interpret reaction outcomes, identify ions, and confirm results with diagnostic tests for gases and precipitates.
6. Comparative evaluation of reaction methods for enthalpy determination, identifying procedural limitations and suggesting refinements for enhanced accuracy.