Chemistry 9701/43 Oct Nov 2020 | Cambridge AS Level Past Papers With Mark Scheme

1. Reaction kinetics of nitrogen monoxide with oxygen, rate equations, calculation of rate constants, and mechanisms with rate-determining steps for iodide and peroxodisulfate reactions.

2. Lattice energy definitions, trends in lattice energy based on ionic radius and charge density, calculations using energy cycles, and explanations of differences in electron affinities of elements like fluorine and carbon.

3. Electrolysis of sodium sulfate and molten sodium chloride, quantitative determination of products, and apparatus setup for standard electrode potential measurement.

4. pH and ion product of water (\\(K_w\\)) expressions, calculations for weak acid and strong base solutions, partition coefficients, and equilibrium distributions of compounds in solvent mixtures.

5. Stability constants of copper-ammonia complexes, reactions with acids to form new complexes, color and geometry analyses of complexes, and the origins of their optical properties.

6. Complex ion chemistry involving ligands, stereoisomerism in platinum complexes, and ligand exchange reactions, including associated stability trends.

7. Synthesis of phenol from phenylamine, reactions with nitric acid and bromine, acidity comparisons among water, ethanol, and phenol, and observations of organic reaction products.

8. Benzene halogenation mechanisms, synthetic routes to cyclohexylmethanol, \\(^{13}C\\)-NMR peak determination, and stepwise organic transformations using oxidizing agents.

9. Proton NMR and mass spectrometry for organic structure elucidation, identification of splitting patterns and fragment ions, and functional group identification in hydrolysis reactions.

10. Polymerization types, stereoisomerism in amino acids, polymer structures involving diamines, and applications in non-solvent-based adhesives with specific hardeners.