Chemistry 9701/52 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Reactions of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, forming hydroxides, oxides, and noting solubility changes.
2. Titration of chloride ions in meat products using silver nitrate, mole calculations, and ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change calculations for iodine formation, and oxidation state shifts in iodine and nitrogen.
4. Nitrogen oxides’ catalytic role in acid rain formation, with reaction mechanisms.
5. Cu²⁺ ion electronic configuration, transition metal orbital splitting, ammonia’s effect on copper complex color.
6. Curcumin structure, functional groups, and reactions with bromine and KMnO₄, leading to product identification.