Chemistry 9701/11 Oct Nov 2013 | Cambridge AS Level Past Papers With Mark Scheme

1. Use of cryolite in aluminum production, reduction of Al₂O₃ melting point, and electrolysis processes.
2. Oxidation number changes in nitrogen-containing reactions, redox ratios in IO₃⁻ to I₂ reactions.
3. Transition metal ion comparisons in electronic configurations and stability trends.
4. Rate versus time graphs for autocatalytic reactions, Boltzmann energy distributions at varying temperatures.
5. Free radical substitution in methane with chlorine, activation energy comparisons for propagation and initiation steps.
6. Equilibrium constant calculations for NH₃ synthesis, enthalpy changes in combustion experiments, heat transfer calculations.
7. Group II compound uses, trends in electronegativity, and reactivity in halide reactions with H₂SO₄.
8. Bonding in ammonium carbonate, properties of dynamic equilibria, factors influencing SO₂ and sulfite preservation in food.
9. Reactivity and product identification in organic reactions, mechanisms for alcohol synthesis, stereochemistry in addition reactions producing chiral centers.