Chemistry 9701/43 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, forming hydroxides, oxides, and observing solubility changes.
2. Titration of chloride ions in meat products using silver nitrate, calculating moles and writing ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy calculations for iodine formation, and oxidation state changes in iodine and nitrogen.
4. Nitrogen oxide catalysis in acid rain formation, including equations and catalytic roles in environmental processes.
5. Copper ion complex formation, Cu²⁺ electronic configuration, orbital splitting, and the effect of ammonia on copper solutions.
6. Curcumin structure and reactions with bromine and KMnO₄, including functional group identification and reaction product analysis.