Chemistry 9701,36 Oct Nov 2024 | Cambridge AS - A Level Past Papers With Mark Scheme

1. Quantitative Analysis of Sodium Carbonate Purity | Experimental setup for determining purity, mass measurements, gas collection, and percentage purity calculations.

2. Thermal Decomposition of Metal Carbonates | Heating magnesium carbonate, mass loss calculations, percentage composition of a mixture, and testing for decomposition products.

3. Error Analysis and Experimental Improvements | Minimizing gas loss, reducing CO₂ solubility, assessing balance uncertainties, and calculating percentage errors.

4. Qualitative Analysis of Inorganic Salts | Heating salt mixtures, observing decomposition reactions, testing for anions (carbonate, sulfate, chloride), and identifying unknown cations.

5. Titration and Solution Chemistry | Use of universal indicator, acid-base reactions in qualitative tests, solubility trends, and precipitation reactions for ion identification.

6. Practical Techniques and Observational Skills | Systematic recording of color changes, gas evolution, precipitate formation, solubility in excess reagents, and test tube handling for efficient qualitative analysis.