Chemistry 9701/53 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigation of temperature's effect on the reaction rate between sodium thiosulfate and hydrochloric acid, using time and temperature measurements to determine reaction rates.
2. Experimental setup for investigating reaction rates, apparatus for measuring temperature and ensuring consistent heating conditions.
3. Calculation of solubility based on crystallization temperature, plotting graphs to visualize solubility changes, identifying anomalies in the data.
4. Plotting reaction rate against temperature, testing predictions related to reaction speed, analyzing percentage error and identifying potential sources of experimental error.
5. Qualitative analysis of ions, tests for halide ions, and understanding the relationship between reagents and ion identification.