Chemistry 9701,51 Oct Nov 2024 | Cambridge AS - A Level Past Papers With Mark Scheme

1. Quantitative Analysis & Titration | Determining Aspirin Mass in Tablets – Experimental procedure for aspirin quantification, titration steps, filtration, and reflux techniques.

2. Colorimetry & Spectrophotometry | Measuring Absorbance of Crystal Violet – Choosing optimal wavelength for analysis, preparing standard solutions, and plotting absorbance vs. concentration.

3. Reaction Kinetics & Rate Determination | Half-life & Order of Reaction – Using absorbance changes over time to determine reaction order, calculating half-life, and evaluating kinetic data.

4. Recrystallization & Filtration Techniques | Purity Assessment & Error Minimization – Understanding filtration under reduced pressure, solvent selection, and impact of washing steps on yield accuracy.

5. Dilution & Solution Preparation | Standardization of Concentration Measurements – Preparing standard solutions, ensuring accuracy in volumetric analysis, and using appropriate apparatus.

6. Graphical Analysis & Anomalous Data Interpretation | Identifying and Correcting Errors – Plotting calibration curves, detecting anomalies, and improving reliability through experimental repetition.