Chemistry 9701/41 May June 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Reactions of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, producing hydroxides, oxides, and solubility differences.
2. Titration of chloride ions in meat products, using silver nitrate, with mole and ionic equation calculations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy calculations for I₂, and oxidation state changes of nitrogen and iodine in nitric acid reactions.
4. Nitrogen oxide catalysis in acid rain formation, with equations and chemical roles for homogenous catalysis in environmental processes.
5. Transition metal chemistry, electronic configuration of Cu²⁺, orbital splitting in complexes, color changes in metal-ligand interactions, and the effect of ammonia on copper solutions.
6. Structural analysis of curcumin, functional groups in its reactions, and product identification through reactions with bromine and KMnO₄.