Chemistry 9701/31 Oct Nov 2007 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride, producing hydroxides and oxides.
2. Chloride ion titration in meat products using 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, explained with chemical equations.
5. Cu²⁺ electronic configuration, orbital splitting, and ammonia's effect on copper complex colors.
6. Curcumin structure and functional group analysis, reactions with bromine and KMnO₄ to identify products.