Chemistry 5070/41 Oct Nov 2024 | Cambridge O-Level Past Papers With Mark Scheme

1. Electrolysis of Lead(II) Bromide | Identifying Electrodes & Reaction Products – Naming electrode materials, describing product appearance, and explaining conductivity changes.

2. Titration & Concentration Calculations | Neutralization of Ethanedioic Acid – Recording burette readings, determining best results, calculating acid concentration, and deducing formula mass.

3. Qualitative Analysis & Ion Identification | Testing Solid & Solution for Ions – Performing gas tests, identifying cations and anions, and using flame tests for metal ion detection.

4. Percentage Composition of an Alloy | Investigating Copper Content in Argentan – Planning an experiment using hydrochloric acid to determine the percentage of copper in an alloy.