Chemistry 9701/51 May June 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Zinc sulfate synthesis and experiment design for reaction with sodium hydroxide, prediction of copper(II) hydroxide formation with varying concentrations, graphical representation of reaction progression.
2. Laboratory procedure for preparing solutions of copper(II) sulfate, precipitation of copper(II) hydroxide, and molar concentration calculations.
3. Hazards and precautions in copper(II) sulfate and sodium hydroxide reactions, ensuring safe experimental conditions, data recording for molar ratio validation.
4. Analysis of experimental data for reaction volume vs. concentration relationship, graphical plotting of Charles's Law, determination of anomalous points, and comment on reliability.
5. Measurement of gas volume and temperature, processing data for confirmation of Charles's Law, effect of pressure on gas behavior.