Chemistry 5070/31 Oct Nov 2024 | Cambridge O-Level Past Papers With Mark Scheme

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

2. Qualitative Analysis & Ion Identification | Testing Solid & Solution for Ions – Performing gas tests, identifying cations and anions, using flame tests for metal ions, and confirming halide presence.

3. 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, including apparatus selection and accuracy measures.