Chemistry 9701/11 May June 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, forming hydroxides and oxides, with associated observations and equations.
2. Titration of chloride ions in meat products using silver nitrate, 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 during reactions.
4. Nitrogen oxide role as a homogeneous catalyst in acid rain formation, with chemical equations illustrating its catalytic process.
5. Transition metal chemistry, focusing on Cu²⁺ electronic configuration, d-orbital splitting, and the impact of ammonia on copper complex colors.
6. Curcumin structure, functional group analysis, and reactions with bromine and KMnO₄ to identify reaction products.