Chemistry 9701/51 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Determination of relative molecular mass using the vaporization of volatile liquids and application of the ideal gas law under varying temperature and pressure conditions.
2. Experimental setup for gas collection and volume measurement using Victor Meyer tubes with safety considerations for volatile substances.
3. Barium hydroxide reaction with hydrochloric acid to analyze temperature rise trends, stoichiometry, and molar concentration.
4. Graphical analysis of reaction data to determine intersections and infer acid concentration, including best-fit line plotting.
5. Evaluation of experimental limitations, including heat loss and inaccuracies near temperature maxima, with suggestions for procedural improvements.
6. Comparative reaction analysis for weak acids like ethanoic acid versus strong acids, including expected temperature change variations and graphical representation.