Chemistry 9701/33 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Determination of iron content in an unknown compound through titration with potassium manganate(VII), including preparation of the sample solution and calculations based on titration data.
2. Calculation of percentage mass of magnesium in a hydrated salt, involving heating to remove water and determining the mass loss.
3. Qualitative analysis of cations and anions in mixtures, including testing with reagents like silver nitrate and potassium iodide to identify chloride, sulfate, and carbonate ions.
4. Safety precautions during experiments, including correct handling of corrosive reagents and ensuring the purity of collected gases.
5. Determining stability constants for metal complex ions, understanding ligand exchanges, and calculating the concentration of various ions based on equilibrium data.
6. Analysis of gas chromatography results and use of NMR spectroscopy for structural identification of organic compounds.