Chemistry 9701/43 May June 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Electronic configurations, bonding, and molecular geometry in fluorine-oxygen compounds; interhalogen reactions with oxidizing properties and predicted equations.

2. Synthesis pathway of pharmaceutical intermediates involving acyl chloride and amine reactions, reagent selection, and product structure predictions.

3. Analysis of magnesium isotopes using mass spectra, Group II nitrate thermal stability trends, and lithium nitrate decomposition.

4. Solubility product (Ksp) calculations for sparingly soluble salts, Hess's Law for enthalpy changes, electrochemical cell predictions, and pH calculations for acidic solutions.

5. Reactivity and hydrolysis of chlorides with water, differences in chemical properties among chlorides, redox reactions with halogens, and Faraday constant applications in calculating Avogadro's number.

6. Organic synthesis of aromatic compounds for perfume and polymer applications, including reaction types, reagents, polymerization processes, and structure-property relationships.

7. Cracking of hydrocarbons into alkenes and isomeric products, reaction mechanisms, and structural predictions of intermediate products.

8. Protein formation through amino acid polymerization, enzyme specificity, and non-competitive inhibition of enzyme-catalyzed reactions.

9. DNA fingerprinting, electrophoresis differences for biomolecules, X-ray crystallography applications in macromolecule analysis, and partition coefficient calculations for pesticide distribution.

10. Shale gas composition analysis, combustion products, energy yield comparison, pollutant emission differences among fuels, and environmental consequences of CO and CO2 emissions.