Skip to content
Try on iPad

Homogeneous and heterogeneous catalysts: CAIE A‑Level Chemistry questions

Every CAIE A-Level Chemistry exam question on 26.2 Homogeneous and heterogeneous catalysts, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

Find questions312
Calculations

312 questions

  1. Q5(b)

    June 2024 · Paper 4

    2 marks26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    June 2024 Paper 4, question 5(b): The reaction of persulfate ions, S2O8 2–, with iodide ions is catalysed by Fe2+ ions. Write two equations to show how Fe2+ catalyses reaction 1. equation 1 equa

  2. Q7(b)(ii)

    Specimen · Paper 4

    1 mark26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 4, question 7(b)(ii): Catalysis can be classified as heterogeneous or homogeneous. Complete Table 7.1 by placing one tick () in each row to indicate the type of catalysis in each re

  3. Q2(a)(i)

    Specimen · Paper 5

    2 marks26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(a)(i): Process the results to complete Table 2.1. Record your data to two decimal places. Table 2.1 mass of initial final difference in activated concentration concent

  4. Q2(a)(ii)

    Specimen · Paper 5

    1 mark26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(a)(ii): Identify the dependent variable in this experiment. [1]

  5. Q2(a)(iii)

    Specimen · Paper 5

    2 marks26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(a)(iii): State and explain the effect, if any, of increasing the mass of activated charcoal, m, on the amount of adsorption that occurs. [2]

  6. Q2(b)

    Specimen · Paper 5

    2 marks26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(b): Plot a graph on the grid to show the relationship between log m Use a cross (×) to plot each data point. Draw the straight line of best fit. 2.15 2.10 2.05 2.00

  7. Q2(c)

    Specimen · Paper 5

    1 mark26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(c): Circle the most anomalous point on the graph. Suggest why this anomaly may have happened during the experimental procedure. [1]

  8. Q2(d)(i)

    Specimen · Paper 5

    2 marks26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(d)(i): Use the graph to determine the gradient of the line of best fit. State the coordinates of both points you used in your calculation. These must be selected from

  9. Q2(d)(ii)

    Specimen · Paper 5

    1 mark26.2 Homogeneous and heterogeneous catalysts
    The whole paper ↗
    Specimen Paper 5, question 2(d)(ii): Use the graph to determine a value for A. A = [1] [Total: 11]
All 9 questions on Homogeneous and heterogeneous catalysts, as a list
  1. June 2024, Paper 4, Q5(b) (2 marks): The reaction of persulfate ions, S2O8 2–, with iodide ions is catalysed by Fe2+ ions. Write two equations to show how Fe2+ catalyses reaction 1. equation 1 equa
  2. Specimen, Paper 4, Q7(b)(ii) (1 mark): Catalysis can be classified as heterogeneous or homogeneous. Complete Table 7.1 by placing one tick () in each row to indicate the type of catalysis in each re
  3. Specimen, Paper 5, Q2(a)(i) (2 marks): Process the results to complete Table 2.1. Record your data to two decimal places. Table 2.1 mass of initial final difference in activated concentration concent
  4. Specimen, Paper 5, Q2(a)(ii) (1 mark): Identify the dependent variable in this experiment. [1]
  5. Specimen, Paper 5, Q2(a)(iii) (2 marks): State and explain the effect, if any, of increasing the mass of activated charcoal, m, on the amount of adsorption that occurs. [2]
  6. Specimen, Paper 5, Q2(b) (2 marks): Plot a graph on the grid to show the relationship between log m Use a cross (×) to plot each data point. Draw the straight line of best fit. 2.15 2.10 2.05 2.00
  7. Specimen, Paper 5, Q2(c) (1 mark): Circle the most anomalous point on the graph. Suggest why this anomaly may have happened during the experimental procedure. [1]
  8. Specimen, Paper 5, Q2(d)(i) (2 marks): Use the graph to determine the gradient of the line of best fit. State the coordinates of both points you used in your calculation. These must be selected from
  9. Specimen, Paper 5, Q2(d)(ii) (1 mark): Use the graph to determine a value for A. A = [1] [Total: 11]

Questions, mark schemes and examiner’s reports are © Cambridge University Press & Assessment, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Every CAIE A-Level Chemistry paper.

Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.