Chemistry 9701/23 Oct Nov 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 precipitates.
2. Titration of chloride ions in meat products using silver nitrate, with calculations of moles 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 in reactions.
4. Nitrogen oxides as homogeneous catalysts in acid rain formation, explaining their role with equations.
5. Transition metal ion complex formation, Cu²⁺ electronic configuration, orbital splitting, and ammonia’s effect on copper solutions.
6. Curcumin structure and functional group analysis, reactions with bromine and KMnO₄, identifying reaction products.