Chemistry 9701/22 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride, producing hydroxides and oxides, with solubility observations.
2. Chloride ion titration in meat products with silver nitrate, including 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, including the reaction mechanisms involved.
5. Copper complex formation, Cu²⁺ electronic configuration, orbital splitting, and ammonia’s impact on copper solution color.
6. Curcumin structure analysis, functional groups, and reactions with bromine and KMnO₄ for product identification.