OCR A Level Chemistry A Unified chemistry June 2025 mark scheme H432/03
Practise the past exam questions by topic
Mass spectrometry9 Qs
NMR spectroscopy26 Qs
Amounts of substance in equations51 Qs
Moles & amount of substance19 Qs
Naming organic compounds30 Qs
PH calculations19 Qs
Phenols15 Qs
Determining orders of reaction11 Qs
Equilibrium constant Kc7 Qs
Rate equations & orders of reaction11 Qs
Rate-determining step & mechanisms6 Qs
Effect of changing conditions on equilibrium13 Qs
Identification of ions9 Qs
Oxidation states13 Qs
Redox equations17 Qs
Shapes of complex ions14 Qs
Benzene & aromatic chemistry10 Qs
Covalent bonding6 Qs
Electrode potentials & electrochemical cells12 Qs
Fuel cells6 Qs
Nucleophilic addition14 Qs
Nucleophilic substitution5 Qs
Percentage yield18 Qs
Calorimetry9 Qs
Hess's law8 Qs
+21 more
6 questions
- Q1 - 8 marks - Mass spectrometry, NMR spectroscopy
- Q2 - 14 marks - Amounts of substance in equations, Moles and amount of substance, Naming organic compounds, pH calculations, Phenols
- Q3 - 11 marks - Determining orders of reaction, Equilibrium constant Kc, Rate equations and orders of reaction, Rate-determining step and mechanisms, The effect of changing conditions on equilibrium
- Q4 - 15 marks - Identification of ions, Moles and amount of substance, Oxidation states, Redox equations, Shapes of complex ions
- Q5 - 16 marks - Amounts of substance in equations, Benzene and aromatic chemistry, Covalent bonding, Electrode potentials and electrochemical cells, Fuel cells, Nucleophilic addition, Nucleophilic substitution, Percentage yield
- Q6 - 6 marks - Amounts of substance in equations, Calorimetry, Hess's law
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