Chemistry 9701/11 Oct Nov 2009 | Cambridge AS Level Past Papers With Mark Scheme

1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride with water, forming hydroxides and oxides, observing solubility and precipitation.
2. Titration of chloride ions in meat products with silver nitrate, calculating moles and writing ionic equations for sodium and potassium chlorides.
3. Iodination of benzene, enthalpy change for iodine formation, and oxidation state changes in iodine and nitrogen.
4. Nitrogen oxides acting as homogeneous catalysts in acid rain formation, explained with chemical reactions.
5. Cu²⁺ electronic configuration, orbital splitting in transition metal complexes, and ammonia's effect on color changes in copper complexes.
6. Curcumin structure and functional group reactions, including bromine and KMnO₄ for product identification.