Chemistry 9701/34 May June 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Quantitative analysis of calcium carbonate in limestone using acid-base titration and thermal decomposition methods.
2. Stoichiometric calculations involving HCl and NaOH reactions for determining excess acid.
3. Identification and calculation of impurities through qualitative analysis with common ions such as Ca²⁺, CO₃²⁻, and NO₃⁻.
4. Accuracy assessment and error minimization in practical experiments using burette readings and repeated heatings.
5. Gas evolution tests for CO₂ and qualitative reagent interactions with limestone-derived solutions.
6. Strategies for improving precision in thermal decomposition and titration-based procedures.