Chemistry 9701/51 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of the amount and percentage by mass of magnesium chloride in a mixture using silver nitrate precipitation.
2. Suggested methods to ensure the solid dissolves quickly, the purpose of washing the precipitate, and drying it properly.
3. Determining the percentage error in mass measurement and how it can be minimized.
4. Identifying the effects of incomplete drying of silver chloride on the percentage by mass of magnesium chloride.
5. Conducting an experiment to investigate Charles' Law and analyzing the relationship between oxygen volume and absolute temperature.
6. Calculating the gradient of a graph for gas volume and temperature, and explaining how smaller volumes would affect the gradient.