Chemistry 9701,31 Oct Nov 2024 | Cambridge AS - A Level Past Papers With Mark Scheme

1. Neutralization & Temperature Change | Determining sulfuric acid concentration using sodium hydroxide, recording temperature variations, graph plotting, and extrapolating neutralization volume.

2. Carbonate Reaction & CO₂ Measurement | Measuring CO₂ gas release from sodium carbonate and sulfuric acid, verifying excess reagent, and calculating sulfuric acid concentration.

3. Error Analysis & Experimental Accuracy | Evaluating uncertainties in balance measurements, selecting appropriate glassware (conical flask vs. beaker), and discussing alternative reaction limitations.

4. Qualitative Analysis of Transition Metal Compounds | Heating and dissolving metal compounds, performing reaction tests with Fe²⁺, H₂O₂, AgNO₃, BaCl₂, and NaOH, and interpreting precipitate formation.

5. Oxidation State Identification & Metal Determination | Identifying the metal in FA 4, FA 5, and FA 6, analyzing color changes, and determining oxidation states through chemical reactions.

6. Practical Chemistry Techniques & Observations | Recording precise experimental data, recognizing solubility patterns, distinguishing between anion and cation reactions, and verifying gas evolution tests.