Chemistry 9701/33 May June 2020 | Cambridge AS Level Past Papers With Mark Scheme

1. Monoprotic acid identification through titration, molarity calculations, molar mass determination, and functional group differentiation using chemical tests.

2. Enthalpy change of neutralization (\\( \\Delta H \\)) for organic acid and NaOH reaction, energy calculations, mole determination, and experimental error analysis in enthalpy change measurement.

3. Identification of functional groups in organic compounds (aldehyde, ketone, carboxylic acid) using 2,4-dinitrophenylhydrazine, Tollens' reagent, and acidified potassium manganate(VII).

4. Anion and cation identification through qualitative tests including thermal decomposition, reactions with NaOH and NH3, and gas evolution tests.

5. Quantitative analysis to determine the concentration and properties of organic acids and their reaction pathways with alkalis under controlled conditions.

6. Differentiation between monoprotic and diprotic acids through titration outcomes and stoichiometric implications for molecular weight calculations.