Chemistry 9701/43 May June 2018 | Cambridge AS Level Past Papers With Mark Scheme

1. Sodium Oxide Reactions: Writing reactions involving sodium oxide with oxygen and water, explaining high melting points due to ionic bonds, and calculating pH changes in sodium oxide-water reactions.
2. Lattice Energy Calculations: Using thermodynamic data to calculate lattice energy for sodium oxide and discussing the difference in exothermicity between Na2O and Na2S.
3. Reaction Rates: Defining reaction rates, studying the rate of reaction between nitrogen monoxide and hydrogen, and calculating rate constants and reaction orders from experimental data.
4. Electrochemical Reactions: Investigating reactions in electrolysis with inert electrodes, analyzing the oxidation and reduction processes, and calculating oxidation numbers for metal ions.
5. Environmental Chemistry: Analyzing environmental impacts of sulfur dioxide oxidation and the role of NO(g) as a catalyst in atmospheric reactions leading to acid rain formation.
6. Complexation and Bonding: Understanding the formation of complex ions, describing the behavior of bidentate ligands, and interpreting experimental data for transition metal complexes.