Chemistry 9701/04 May June 2009 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, forming hydroxides and oxides.
2. Titration of chloride ions in meat products using silver nitrate, with mole calculations and ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change calculations for iodine formation, and oxidation state changes in iodine and nitrogen.
4. Nitrogen oxide catalysis in acid rain formation, with chemical equations and catalytic processes.
5. Cu²⁺ electronic configuration, d-orbital splitting in transition metal complexes, and ammonia’s effect on solution color.
6. Curcumin structure, functional groups, and reactions with bromine and KMnO₄ for product identification.