Chemistry 9701/03 May June 2003 | 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. Chloride ion quantification in meat products via silver nitrate titration, including mole calculations and ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change calculation for iodine formation, and oxidation state changes in iodine and nitrogen.
4. Nitrogen oxide catalysis in acid rain formation, explained through chemical reactions and mechanisms.
5. Cu²⁺ electronic configuration, d-orbital splitting in transition metal complexes, and ammonia’s effect on copper solution color.
6. Curcumin structure and functional group analysis, reactions with bromine and KMnO₄ for product identification.