Chemistry 9701/13 May June 2018 | Cambridge AS Level Past Papers With Mark Scheme

1. Boiling Point of Ammonia vs. Phosphine: The boiling point difference between ammonia (NH3) and phosphine (PH3) due to the presence of hydrogen bonding in NH3 and its absence in PH3.
2. Neutron Behavior in Electric Fields: Understanding the behavior of neutrons in an electric field, identifying their mass and deflection properties.
3. Electron Distribution in the Second Shell: Identifying electron configurations in the second shell of an atom with eight protons, considering orbital types and electron distributions.
4. Bonding in Ethene: Analyzing the bond between carbon and hydrogen in ethene, with a focus on sigma and pi bonds.
5. Aspirin Synthesis: Calculating the maximum mass of aspirin produced from 2-hydroxybenzoic acid and ethanoic anhydride based on given data.
6. Gas Behavior in Ideal Conditions: Analyzing the behavior of a fixed mass of an ideal gas, with appropriate temperature and pressure conditions.
7. Enthalpy Change in Reactions: Using data to calculate standard enthalpy changes for reactions such as the formation of silicon tetrachloride (SiCl4) and its reactions with water.
8. Rate Laws and Experiment Results: Studying the rate of reaction for the reaction between iodine monochloride (ICl) and hydrogen (H2), and determining the reaction order with respect to both reactants.
9. Electrolysis Reactions: Identifying substances liberated at the anode and cathode during electrolysis, using molten and aqueous solutions for various compounds.
10. Thermal Decomposition and Solubility Trends: Analyzing the decomposition of calcium nitrate and understanding trends in the solubility of Group 2 sulfates down the group.
11. Transition Metal Chemistry: Understanding cobalt's electronic configurations, explaining color changes in complexes, and identifying isomerism in transition metal complexes.
12. Reactivity and Mechanisms of Phenol Derivatives: Describing the reactions of phenol, 2-naphthol, and other organic compounds, including nitration, and discussing functional group behavior in organic chemistry.