Chemistry 9701/35 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Titration and Redox Reactions: Performing titrations to determine iodine's oxidation state in a compound, using sodium thiosulfate, starch indicator, and calculating mole values to balance ionic equations.
2. Decomposition of Zinc Carbonate: Experimentally determining the value of y in basic zinc carbonate by heating, calculating the moles of zinc oxide produced, and understanding the observations during heating.
3. Qualitative Analysis: Identifying ions in solutions through various tests, using reagents to confirm halides and nitrogen-containing anions, and determining the formulas of salts based on test results.
4. Reaction Kinetics and Mechanism: Understanding the order of reaction with respect to different reactants, using experimental data to deduce rate constants, and explaining the behavior of reactants during a redox process.
5. Lead-Acid Batteries: Understanding the reactions involved in lead-acid cells, calculating the mass of lead converted to lead sulfate during discharging, and explaining the differences in voltage behavior compared to fuel cells.
6. Transition Metal Chemistry: Investigating the properties of transition metal complexes, defining structural isomerism, and understanding the factors that lead to different colors in these complexes.