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Acid–base titrations: CAIE IGCSE Chemistry questions

Every CAIE IGCSE Chemistry exam question on 12.2 Acid–base titrations, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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407 questions

  1. Q1(a)

    June 2024 · Paper 6

    2 marks12.2 Acid–base titrations
    The whole paper ↗
    June 2024 Paper 6, question 1(a): Name the items of apparatus labelled A and B in Fig. 1.1. A B [2]

  2. Q1(b)(i)

    June 2024 · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    June 2024 Paper 6, question 1(b)(i): Explain why the student adds an indicator to the aqueous potassium hydroxide. [1]

  3. Q1(b)(ii)

    June 2024 · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    June 2024 Paper 6, question 1(b)(ii): Name a suitable indicator. [1]

  4. Q1(c)

    June 2024 · Paper 6

    2 marks12.2 Acid–base titrations
    The whole paper ↗
    June 2024 Paper 6, question 1(c): Describe how the student can determine the volume of dilute hydrochloric acid used in this titration. [2]

  5. Q1(d)

    June 2024 · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    June 2024 Paper 6, question 1(d): The student observes the colour changes that occur as they add dilute hydrochloric acid from the burette. State one other thing the student should do as they

  6. Q39

    Specimen · Paper 1

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 1, question 39: Five steps in an acid–base titration are shown. 1 Slowly add the acid from a burette into a conical flask until the indicator becomes colourless. 2 Add thymolp

  7. Q39

    Specimen · Paper 2

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 2, question 39: Five steps in an acid–base titration are shown. 1 Slowly add the acid from a burette into a conical flask until the indicator becomes colourless. 2 Add thymolp

  8. Q2(a)

    Specimen · Paper 6

    4 marks12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(a): Use Fig. 2.1 and Fig. 2.2 to record the readings for Experiments 1 and 2 in Table 2.1 and complete Table 2.1. Experiment 1 3 29 4 30 5 31 initial reading final

  9. Q2(b)

    Specimen · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(b): State the colour change observed in Experiment 1. from to [1]

  10. Q2(c)(i)

    Specimen · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(c)(i): State which solution of sodium hydroxide, solution A or solution B, is the more concentrated. Explain your answer. [1]

  11. Q2(c)(ii)

    Specimen · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(c)(ii): Deduce the simplest whole number ratio of concentration of solution A : concentration of solution B. [1]

  12. Q2(d)

    Specimen · Paper 6

    2 marks12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(d): State the volume of hydrochloric acid needed if Experiment 1 is repeated using 10 cm3 of solution A. [2]

  13. Q2(e)(i)

    Specimen · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(e)(i): Suggest why the conical flask is rinsed with distilled water. [1]

  14. Q2(e)(ii)

    Specimen · Paper 6

    1 mark12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(e)(ii): The conical flask is not dried after it is rinsed with distilled water. Suggest why the conical flask is not dried. [1]

  15. Q2(f)

    Specimen · Paper 6

    2 marks12.2 Acid–base titrations
    The whole paper ↗
    Specimen Paper 6, question 2(f): State the effect, if any, on the volume of dilute hydrochloric acid used in Experiment 1 if the solution of sodium hydroxide is warmed before adding the dilute
All 15 questions on Acid–base titrations, as a list
  1. June 2024, Paper 6, Q1(a) (2 marks): Name the items of apparatus labelled A and B in Fig. 1.1. A B [2]
  2. June 2024, Paper 6, Q1(b)(i) (1 mark): Explain why the student adds an indicator to the aqueous potassium hydroxide. [1]
  3. June 2024, Paper 6, Q1(b)(ii) (1 mark): Name a suitable indicator. [1]
  4. June 2024, Paper 6, Q1(c) (2 marks): Describe how the student can determine the volume of dilute hydrochloric acid used in this titration. [2]
  5. June 2024, Paper 6, Q1(d) (1 mark): The student observes the colour changes that occur as they add dilute hydrochloric acid from the burette. State one other thing the student should do as they
  6. Specimen, Paper 1, Q39 (1 mark): Five steps in an acid–base titration are shown. 1 Slowly add the acid from a burette into a conical flask until the indicator becomes colourless. 2 Add thymolp
  7. Specimen, Paper 2, Q39 (1 mark): Five steps in an acid–base titration are shown. 1 Slowly add the acid from a burette into a conical flask until the indicator becomes colourless. 2 Add thymolp
  8. Specimen, Paper 6, Q2(a) (4 marks): Use Fig. 2.1 and Fig. 2.2 to record the readings for Experiments 1 and 2 in Table 2.1 and complete Table 2.1. Experiment 1 3 29 4 30 5 31 initial reading final
  9. Specimen, Paper 6, Q2(b) (1 mark): State the colour change observed in Experiment 1. from to [1]
  10. Specimen, Paper 6, Q2(c)(i) (1 mark): State which solution of sodium hydroxide, solution A or solution B, is the more concentrated. Explain your answer. [1]
  11. Specimen, Paper 6, Q2(c)(ii) (1 mark): Deduce the simplest whole number ratio of concentration of solution A : concentration of solution B. [1]
  12. Specimen, Paper 6, Q2(d) (2 marks): State the volume of hydrochloric acid needed if Experiment 1 is repeated using 10 cm3 of solution A. [2]
  13. Specimen, Paper 6, Q2(e)(i) (1 mark): Suggest why the conical flask is rinsed with distilled water. [1]
  14. Specimen, Paper 6, Q2(e)(ii) (1 mark): The conical flask is not dried after it is rinsed with distilled water. Suggest why the conical flask is not dried. [1]
  15. Specimen, Paper 6, Q2(f) (2 marks): State the effect, if any, on the volume of dilute hydrochloric acid used in Experiment 1 if the solution of sodium hydroxide is warmed before adding the dilute

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