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Enthalpy change, ΔH: CAIE A‑Level Chemistry questions

Every CAIE A-Level Chemistry exam question on 5.1 Enthalpy change, ΔH, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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312 questions

  1. Q10

    June 2024 · Paper 1

    The whole paper ↗
    June 2024 Paper 1, question 10: For a certain endothermic reaction, the activation energy is numerically equal to twice the enthalpy change of reaction. Which reaction pathway diagram is corre
  2. Q4(a)

    June 2024 · Paper 2

    The whole paper ↗
    June 2024 Paper 2, question 4(a): Define enthalpy change of formation. [2]
  3. Q4(b)(i)

    June 2024 · Paper 2

    The whole paper ↗
    June 2024 Paper 2, question 4(b)(i): Complete Table 4.1 by adding equations with relevant state symbols to represent: • standard enthalpy change of formation for Fe2O3 • standard enthalpy change of
  4. Q16

    Specimen · Paper 1

    The whole paper ↗
    Specimen Paper 1, question 16: What is the definition of the bond energy of the Br–Br covalent bond? A The energy required to produce one mole of bromine atoms in the gaseous state. B The ene
All 4 questions on Enthalpy change, ΔH, as a list
  1. June 2024, Paper 1, Q10 (1 mark): For a certain endothermic reaction, the activation energy is numerically equal to twice the enthalpy change of reaction. Which reaction pathway diagram is corre
  2. June 2024, Paper 2, Q4(a) (2 marks): Define enthalpy change of formation. [2]
  3. June 2024, Paper 2, Q4(b)(i) (2 marks): Complete Table 4.1 by adding equations with relevant state symbols to represent: • standard enthalpy change of formation for Fe2O3 • standard enthalpy change of
  4. Specimen, Paper 1, Q16 (1 mark): What is the definition of the bond energy of the Br–Br covalent bond? A The energy required to produce one mole of bromine atoms in the gaseous state. B The ene

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