Chemistry 9701/52 May June 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Electrolysis principles, reaction equations, and gas volume relationships for sulfuric acid and organic salts.
2. Quantitative electrochemical analysis: gas collection techniques, Faraday’s laws, and stoichiometric predictions.
3. Titration and dissociation constant (Ka) calculations for monoprotic hydroxycarboxylic acids.
4. Relationship between pH and buffer composition through sodium salt addition experiments, including graph interpretation.
5. Experimental anomalies in titration and pH buffering experiments with potential procedural sources of error.
6. Molecular structure predictions for organic acids based on calculated molar mass and dissociation constants.