Chemistry 9701/31 May June 2009 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis reactions of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, producing hydroxides and oxides.
2. Chloride ion quantification in meat products via titration with silver nitrate, involving mole calculations and ionic equations.
3. Iodination of benzene, enthalpy calculations for iodine formation, and oxidation state changes of nitrogen and iodine.
4. Nitrogen oxide catalysis in acid rain formation, explained through chemical reactions and mechanisms.
5. Copper ion configuration, d-orbital splitting in transition metal complexes, and ammonia’s impact on solution color.
6. Curcumin structure, functional groups, and reactions with bromine and KMnO₄ for product identification.