Chemistry 9701/05 Oct Nov 2002 | Cambridge AS Level Past Papers With Mark Scheme

1. Reaction Rate Investigation: Determining the rate of reaction between iodine and hydrogen ions, calculating reaction rates by varying concentrations of reagents, and comparing how different concentrations affect the rate.
2. Concentration Effect: Analyzing how varying concentrations of reagents in experiments 2, 3, and 4 affect the rate of reaction and determining the relationship between concentration and rate.
3. Zero-Order Reaction Investigation: Designing an experiment to test whether the reaction follows zero-order kinetics with respect to iodine by adjusting reagent volumes accordingly.
4. Planning for Percentage Water Loss: Developing a method to calculate the percentage of water lost from sodium carbonate crystals, involving heating and weighing, and planning the steps to collect and analyze experimental data.
5. Data Analysis and Calculation: Structuring the data table for the experiment to determine water loss from sodium carbonate, and explaining the calculations to determine the percentage of water lost.