Chemistry 9701/53 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of magnesium chloride amount in a sample using the mass of AgCl precipitate obtained.
2. Explanation of the preparation steps for the solid mixture, including dissolving and washing the precipitate.
3. Suggestions for improving the accuracy and reliability of the experiment, including apparatus use and drying methods.
4. Calculation of the percentage error in weighing and suggestions for minimizing this error.
5. Explanation of the effect of not drying the AgCl precipitate on the final mass of magnesium chloride.
6. Interpretation of experimental data and calculation of the percentage by mass of magnesium chloride in the mixture.