Chemistry 9701/34 May June 2013 | Cambridge AS Level Past Papers With Mark Scheme

1. Heat of neutralization experiments for hydrochloric acid and sodium hydroxide, with data collection for temperature rise and calculations for concentration determination.
2. Graphical analysis of temperature rise versus acid volume, including intersection points for equivalence volume determination.
3. Secondary verification of alkali concentration using volumetric titration with diluted sodium hydroxide and hydrochloric acid, calculating molarity from titration results.
4. Qualitative analysis to identify cations and anions in solutions using reactions with sodium hydroxide, barium chloride, and silver nitrate.
5. Differentiation of sulfate and sulfite ions through precipitation and gas evolution tests with barium ions and dilute acids.
6. Identification of ethanol, ethanal, and ethanoic acid using chemical tests, such as Tollens' reagent and sodium bicarbonate, analyzing observations for compound-specific reactivity.