Chemistry 9701/51 Oct Nov 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis reactions of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, including resulting hydroxides and oxides.
2. Chloride ion quantification in meat products via titration with silver nitrate, including moles calculation and ionic equation writing.
3. Iodination of benzene, enthalpy calculations for I₂ formation, and oxidation state changes of iodine and nitrogen.
4. Nitrogen oxides as homogeneous catalysts in acid rain formation, with reaction mechanisms and equations.
5. Copper ion complex formation, electronic configuration of Cu²⁺, orbital splitting, and ammonia’s effect on color.
6. Curcumin structure, functional groups, and reactions with bromine and KMnO₄ to identify products.