Chemistry 9701/53 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

The document you uploaded is the "Chemistry 9701/53 Paper 5 Planning, Analysis, and Evaluation" for the Cambridge International A-Level exam from October/November 2017. It consists of structured questions that assess practical laboratory skills and the ability to analyze and evaluate experimental procedures. Topics covered include:

1. Reaction Rate Investigation: Understanding how to determine the effect of iodide ion concentration on the rate of reaction, with detailed steps on preparing solutions, performing the experiment, and analyzing the results using the starch indicator.
2. Electrolysis of Sulfuric Acid: Involving platinum electrodes, this part covers the production of hydrogen and oxygen gases during electrolysis, and calculating Faraday constants based on the volume of gas produced and charge passed.
3. Experimental Calculations: Multiple tasks involve calculating the mass of chemicals, determining concentrations, and interpreting experimental data from reactions and measurements.
4. Graph Plotting and Interpretation: Plotting graphs to represent data from experiments, drawing conclusions based on results, and identifying possible sources of error in the procedure.
5. Experimental Errors and Improvements: Recognizing and addressing errors in experimental setups, such as the issue with premature reactions or measurement inaccuracies, and suggesting improvements.
6. Chemistry Hazards and Precautions: Identifying hazards associated with chemicals used in experiments and suggesting safety precautions to minimize risk.