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Amines: Eduqas A‑Level Chemistry questions

Every Eduqas A-Level Chemistry exam question on OA3.1 Amines, 2016–2025, with its mark scheme and examiner’s report.

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1,513 questions

  1. Q4

    June 2025 · Component 2

    3 marksC3.5 Instrumental analysisOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 4: The mass spectrum of a primary amine, R—NH2, shows a strong signal at m/z 91 and a molecular ion at m/z 107. It reacts with cold nitric(III) acid to give nitrog

  2. Q9(a)(iv)

    June 2025 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 9(a)(iv): 3-Nitrobenzoic acid is reduced to 3-aminobenzoic acid in stage 3 State the reducing agent for this reaction. [1]

  3. Q9(b)(i)

    June 2025 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 9(b)(i): State the temperature used for this reaction. [1] °C

  4. Q9(b)(ii)

    June 2025 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 9(b)(ii): The diazonium compound reacts with an aromatic amine to produce the azo dye whose formula is shown below. COOH H3C N N N H3C I. Azo dyes contain a chromophore,

  5. Q9(b)(iii)

    June 2025 · Component 2

    3 marksOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 9(b)(iii): This azo dye is red in colour and has a maximum absorption in the visible spectrum at 420 nm. I. State why the dye is red in colour. [1] II. Calculate the ener

  6. Q9(b)(iv)

    June 2025 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 9(b)(iv): The diazonium compound produced from 3-aminobenzoic acid by reaction with nitric(III) acid is not stable at higher temperatures. It breaks down to form 3-hydrox

  7. Q11(b)

    June 2025 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    June 2025 Component 2, question 11(b): Explain why an aqueous solution of the amine produced in part (a)(v) has a pH greater than 7 Give an equation as part of your answer. [2]

  8. Q3(e)(ii)

    June 2025 · Component 3

    1 markOA3.1 Amines
    The whole paper ↗
    June 2025 Component 3, question 3(e)(ii): State a chemical test that will give a positive result for compounds L and M but not for N-propylbenzamide or compound K. [1] Reagent(s) Observation

  9. Q10(b)(i)

    June 2024 · Component 2

    3 marksC3.3 HalogenoalkanesOA3.1 Amines
    The whole paper ↗
    June 2024 Component 2, question 10(b)(i): The flow chart shows a method for producing 1,6-diaminohexane from 1,4-dichlorobutane. stage 1 CI H2C(CH2)2CH2 CI N C H2C(CH2)2CH2 C N KCN stage 2 H2N CH2 CH2(C

  10. Q12(b)(ii)

    June 2024 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    June 2024 Component 2, question 12(b)(ii): Benzene-1,3-diamine can be obtained by the reduction of 1,3-dinitrobenzene. NO2 +NH3CI– NH2 stage 1 stage 2 + NO2 NH3CI– NH2 I. State the reagent(s) used in sta

  11. Q12(b)(iii)

    June 2024 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    June 2024 Component 2, question 12(b)(iii): State the reagent(s) and conditions for the formation of a diazonium compound from benzene-1,3-diamine. [2] NH2 N2 +CI– NH2 N2 +CI– Reagent(s) Conditions

  12. Q12(b)(iv)

    June 2024 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    June 2024 Component 2, question 12(b)(iv): The diazonium compound formed in part (iii) can react with more unreacted benzene-1,3-diamine to give the azo dye Bismarck brown Y. H2N NH2 N N N N NH2 NH2 This

  13. Q4(a)

    June 2024 · Component 3

    1 markOA3.1 Amines
    The whole paper ↗
    June 2024 Component 3, question 4(a): Write the equation for the reaction occurring in stage 1. [1]

  14. Q4(d)(iv)

    June 2024 · Component 3

    5 marksOA3.1 AminesC1.3 Chemical calculations
    The whole paper ↗
    June 2024 Component 3, question 4(d)(iv): Nitric(III) acid (nitrous acid), HNO2, is an unstable compound and is made when required by the reaction of a dilute acid, for example HCl, with sodium nitrate(

  15. Q4(d)(v)

    June 2024 · Component 3

    2 marksOA3.1 Amines
    The whole paper ↗
    June 2024 Component 3, question 4(d)(v): Compound D can be prepared from compound C in a two-stage process. Give the structures of the intermediate and compound D. [2] O CH compound C H2N CH3 HNO2 temp

  16. Q3(b)

    Autumn 2021 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    Autumn 2021 Component 2, question 3(b): This dinitro compound can be reduced to the corresponding diamino compound, 2,4-diaminophenol. OH NH2 NH2 2,4-diaminophenol Suggest a reagent(s) that can be use

  17. Q3(c)(i)

    Autumn 2021 · Component 2

    1 markOA3.1 Amines
    The whole paper ↗
    Autumn 2021 Component 2, question 3(c)(i): State a compound that can be used in the second stage to make paracetamol. [1]

  18. Q9(a)(iii)

    Autumn 2021 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    Autumn 2021 Component 2, question 9(a)(iii): Thyme oil contains a number of other compounds, including other phenols. Most of these compounds, including the phenols, are colourless. If a thin layer chromat

  19. Q9(b)(iv)

    Autumn 2021 · Component 2

    4 marksOA3.1 AminesC1.3 Chemical calculations
    The whole paper ↗
    Autumn 2021 Component 2, question 9(b)(iv): Study the reaction sequence below and answer the questions that follow. H CH2 C CH2 Br Stage 1 reagent S H CH2 C CH2 CN Stage 2 H CH2 C CH2 CH2 NH2 compound T (

  20. Q10(a)(iii)

    Autumn 2021 · Component 2

    2 marksOA3.1 Amines
    The whole paper ↗
    Autumn 2021 Component 2, question 10(a)(iii): Hexamine acts as a tertiary base. Explain the meaning of these two terms in this context. [2] Tertiary Base
All 38 questions on Amines, as a list
  1. June 2025, Component 2, Q4 (3 marks): The mass spectrum of a primary amine, R—NH2, shows a strong signal at m/z 91 and a molecular ion at m/z 107. It reacts with cold nitric(III) acid to give nitrog
  2. June 2025, Component 2, Q9(a)(iv) (1 mark): 3-Nitrobenzoic acid is reduced to 3-aminobenzoic acid in stage 3 State the reducing agent for this reaction. [1]
  3. June 2025, Component 2, Q9(b)(i) (1 mark): State the temperature used for this reaction. [1] °C
  4. June 2025, Component 2, Q9(b)(ii) (2 marks): The diazonium compound reacts with an aromatic amine to produce the azo dye whose formula is shown below. COOH H3C N N N H3C I. Azo dyes contain a chromophore,
  5. June 2025, Component 2, Q9(b)(iii) (3 marks): This azo dye is red in colour and has a maximum absorption in the visible spectrum at 420 nm. I. State why the dye is red in colour. [1] II. Calculate the ener
  6. June 2025, Component 2, Q9(b)(iv) (1 mark): The diazonium compound produced from 3-aminobenzoic acid by reaction with nitric(III) acid is not stable at higher temperatures. It breaks down to form 3-hydrox
  7. June 2025, Component 2, Q11(b) (2 marks): Explain why an aqueous solution of the amine produced in part (a)(v) has a pH greater than 7 Give an equation as part of your answer. [2]
  8. June 2025, Component 3, Q3(e)(ii) (1 mark): State a chemical test that will give a positive result for compounds L and M but not for N-propylbenzamide or compound K. [1] Reagent(s) Observation
  9. June 2024, Component 2, Q10(b)(i) (3 marks): The flow chart shows a method for producing 1,6-diaminohexane from 1,4-dichlorobutane. stage 1 CI H2C(CH2)2CH2 CI N C H2C(CH2)2CH2 C N KCN stage 2 H2N CH2 CH2(C
  10. June 2024, Component 2, Q12(b)(ii) (2 marks): Benzene-1,3-diamine can be obtained by the reduction of 1,3-dinitrobenzene. NO2 +NH3CI– NH2 stage 1 stage 2 + NO2 NH3CI– NH2 I. State the reagent(s) used in sta
  11. June 2024, Component 2, Q12(b)(iii) (2 marks): State the reagent(s) and conditions for the formation of a diazonium compound from benzene-1,3-diamine. [2] NH2 N2 +CI– NH2 N2 +CI– Reagent(s) Conditions
  12. June 2024, Component 2, Q12(b)(iv) (1 mark): The diazonium compound formed in part (iii) can react with more unreacted benzene-1,3-diamine to give the azo dye Bismarck brown Y. H2N NH2 N N N N NH2 NH2 This
  13. June 2024, Component 3, Q4(a) (1 mark): Write the equation for the reaction occurring in stage 1. [1]
  14. June 2024, Component 3, Q4(d)(iv) (5 marks): Nitric(III) acid (nitrous acid), HNO2, is an unstable compound and is made when required by the reaction of a dilute acid, for example HCl, with sodium nitrate(
  15. June 2024, Component 3, Q4(d)(v) (2 marks): Compound D can be prepared from compound C in a two-stage process. Give the structures of the intermediate and compound D. [2] O CH compound C H2N CH3 HNO2 temp
  16. Autumn 2021, Component 2, Q3(b) (1 mark): This dinitro compound can be reduced to the corresponding diamino compound, 2,4-diaminophenol. OH NH2 NH2 2,4-diaminophenol Suggest a reagent(s) that can be use
  17. Autumn 2021, Component 2, Q3(c)(i) (1 mark): State a compound that can be used in the second stage to make paracetamol. [1]
  18. Autumn 2021, Component 2, Q9(a)(iii) (2 marks): Thyme oil contains a number of other compounds, including other phenols. Most of these compounds, including the phenols, are colourless. If a thin layer chromat
  19. Autumn 2021, Component 2, Q9(b)(iv) (4 marks): Study the reaction sequence below and answer the questions that follow. H CH2 C CH2 Br Stage 1 reagent S H CH2 C CH2 CN Stage 2 H CH2 C CH2 CH2 NH2 compound T (
  20. Autumn 2021, Component 2, Q10(a)(iii) (2 marks): Hexamine acts as a tertiary base. Explain the meaning of these two terms in this context. [2] Tertiary Base
  21. Autumn 2020, Component 2, Q7(e)(i) (1 mark): Explain why piperazine acts as a base. [1]
  22. Autumn 2020, Component 2, Q7(e)(ii) (1 mark): Give the structure of the compound formed when 1 mol of piperazine reacts with 2 mol of hydrochloric acid. [1]
  23. Autumn 2020, Component 2, Q8(b)(ii) (1 mark): Lycopene is a bright red solid when seen in white light. State which colour(s) present in white light are absorbed to result in this red colour. [1]
  24. Autumn 2020, Component 2, Q8(c) (2 marks): Many compounds that contain a conjugated double bond system (alternating double and single carbon to carbon bonds) absorb in the ultraviolet and visible regions
  25. Autumn 2020, Component 2, Q9(e)(v) (1 mark): If a polyamide were to be made instead of a polyester, 1,6-dichlorohexane would need to be converted to 1,6-diaminohexane. State a reagent that would react with
  26. Autumn 2020, Component 2, Q10(d)(i) (1 mark): Phenylamine is made in the laboratory by the reduction of nitrobenzene. State the reagents used for this reduction. [1]
  27. Autumn 2020, Component 2, Q10(d)(ii) (1 mark): The direct nitration of phenylamine gives a mixture of products as well as the required nitrophenylamine. To obtain a better yield of nitrophenylamine, phenylam
  28. Autumn 2020, Component 2, Q10(e)(i) (2 marks): State the temperature used for Stage 1 ………… …………….. Stage 2 ………… …………….. [2]
  29. Autumn 2020, Component 2, Q10(e)(ii) (1 mark): Complete the equation shown in stage 3 by giving the formulae of the other products formed. [1]
  30. June 2019, Component 2, Q1(d) (1 mark): Identify reagent B. [1]
  31. June 2019, Component 2, Q2(a) (2 marks): State the reagents and conditions needed to prepare a solution of benzenediazonium chloride from phenylamine. [2]
  32. June 2019, Component 2, Q2(b) (1 mark): In white light N-(phenylazo)phenylamine is seen as a yellow solid. Explain why this compound is yellow in white light. [1]
  33. June 2019, Component 2, Q10(a)(vi) (1 mark): Benzene-1,4-diamine, C6H4(NH2)2, used in stage 4, can be converted to benzene-1,4-diol, C6H4(OH)2 Suggest a reagent(s) that can be used for this reaction. [1]
  34. June 2018, Component 2, Q12(d)(i) (7 marks): In the laboratory 4-methylphenol can be made in several stages from methylbenzene. First stage The nitration of methylbenzene CH3 CH3 CH3 NO2 + NO2 Second stage
  35. June 2018, Component 2, Q14(b)(iv) (3 marks): The final stage to make DEPA is shown in the equation below. O CH2 C + (CH3CH2)2NH CI diethylamine O CH2 C + HCI N(CH2CH3)2 DEPA A teacher asked some students f
  36. June 2017, Component 2, Q9(a)(i) (1 mark): State the reagent used in stage 1 to produce N-phenylethanamide from phenylamine. [1]
  37. June 2017, Component 2, Q9(b)(i) (2 marks): State the reagents and conditions used to produce an aqueous solution of 2,4-dinitrobenzenediazonium chloride from 2,4-dinitrophenylamine. [2]
  38. June 2017, Component 2, Q9(b)(ii) (2 marks): Permanent Red 2G appears red in white light. State and explain the colour observed, if any, when Permanent Red 2G is viewed in I. blue light [1] II. red light [

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