Chemistry 9701/04 May June 2003 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride, producing hydroxides and oxides.
2. Chloride ion titration in meat products with silver nitrate, mole calculations, and ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change for iodine formation, and oxidation state changes of iodine and nitrogen.
4. Nitrogen oxide catalysis in acid rain formation, explained through reaction mechanisms.
5. Cu²⁺ electronic configuration, d-orbital splitting, and ammonia’s impact on copper complex colors.
6. Curcumin structure, functional groups, and reactions with bromine and KMnO₄ for product identification.