Chemistry 9701/12 May June 2022 | Cambridge AS Level Past Papers With Mark Scheme
1. Preparation: 0.200 mol/dm³ NaCl solution, mass calculation, weighing by difference, transfer to beaker.
2. Titration: molar ratio sodium hydroxide and carboxylic acid, calculations, carboxylic acid identification.
3. Aminoethanoic acid titrations, titre differences, comparison with carboxylic acid in FA 1.
4. Magnesium compounds: thermal decomposition, magnesium oxide mass, decomposition product formula.
5. Qualitative analysis: anion and functional group identification, reactions with sodium hydroxide, barium chloride, reagents.

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