Chemistry 9701/12 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride, resulting in hydroxides, oxides, and precipitation.
2. Titration for chloride ion determination in meat, including mole calculations and ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change calculation for iodine, and oxidation state changes in nitrogen and iodine.
4. Nitrogen oxides catalyzing acid rain formation, explained with chemical reactions and catalytic processes.
5. Cu²⁺ 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 to identify products.