Chemistry 9701/41 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of magnesium chloride's amount and percentage by mass in a sample, using silver chloride precipitation data.
2. Explanation of dissolution and washing processes in sample preparation, ensuring rapid dissolution and purity of the precipitate.
3. Assessment of the impact of drying methods on the final mass, including reasons for using an oven over a Bunsen burner.
4. Error analysis in weighing the sample and strategies for reducing percentage error in measurement.
5. Use of safety precautions in handling reactive chemicals, and ensuring pure oxygen collection during the reaction.
6. Study of reaction rate, including the effect of concentration on rate, and calculation of reaction rates for given conditions.