Chemistry 9701/42 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Thermal decomposition trends of Group II nitrates and enthalpy-related calculations, including hydration and lattice energy concepts.
2. Periodic trends analysis, reactions of Period 3 chlorides with water, and associated pH and observations.
3. Transition metal chemistry, including ligand bonding, complex formation, and redox reactions with manganese and copper ions.
4. Reaction mechanisms, including nucleophilic substitution, SN1 pathway, and kinetic analysis using rate equations and half-life data.
5. Electrochemical cells, standard electrode potentials, and quantitative determination of metal properties through stoichiometric calculations.
6. Organic synthesis pathways involving boron compounds, nucleophilic additions, and alcohol preparations using reduction and hydroboration-oxidation methods.