Chemistry 9701,21 Oct Nov 2024 | Cambridge AS - A Level Past Papers With Mark Scheme

1. Atomic Structure & Isotopes | Electronic configuration of cobalt, isotopic composition of rhodium and iridium, relative atomic mass calculations, and hydration in rhodium(III) chloride.

2. Group 17 Chemistry & Halogenoalkanes | Reactivity trends, thermal stability of hydrogen halides, free-radical substitution in ethane, disproportionation reactions, and silver nitrate test for CHCl₃.

3. Group 14 Elements & Carbon Compounds | Structural differences in graphite and tin, conductivity explanation, carbonate reactions with acids, ionization energy trends in silicon, and boiling points of Group 14 hydrides.

4. Silicon & Tin Chemistry | SiCl₄ hydrolysis, bonding differences between SiO₂ and SiCl₄, amphoteric behavior of SnO₂, and acid-base reaction products.

5. Organic Chemistry & Reaction Mechanisms | Nucleophilic addition in propanone, reduction reactions, optical isomerism, distinguishing organic compounds via IR spectroscopy.

6. Infrared Spectroscopy & Functional Groups | Analysis of absorption peaks, distinguishing between carboxyl, hydroxy, and nitrile groups, and interpreting spectra to identify specific organic compounds.