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Carboxylic acids, esters and acyl chlorides

Past-paper questions pack

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Questions are numbered; the mark schemes (the answer key) follow on separate pages so the question pages can be handed out alone. www.chemistryaleveltutor.com

OCR AS and A-level Chemistry past-paper questions since 2016 · 59 parts · mark schemes follow the questions · www.chemistryaleveltutor.com · Questions and mark schemes © OCR

1. June 2025 · Paper 2 · Q5 · 1 marks ·
5 0.200 mol of HOOCCH2CH2COOH is reacted with 0.300 mol NaOH. How many water molecules are formed? A 1.204 × 1023 B 1.806 × 1023 C 2.408 × 1023 D 3.612 × 1023 Your answer [1]
2. June 2025 · Paper 2 · Q9 · 1 marks ·
9 Which reagents could a student use to prepare the ester shown? O CH3CH2 C O O A CH3CH2 C OH + HO B CH3CH2 OH + HOOC C CH3CH2CH2 OH + HOOC O D CH3CH2 C Cl + HO Your answer [1]
3. June 2025 · Paper 2 · Q18(c) · 2 marks ·
(c) 3-Hydroxybutanoic acid reacts with ethanoic anhydride, (CH3CO)2O. Complete the equation for this reaction. Show the structures of the organic compounds. O O CH3 O + CH C C C H3C O CH3 HO CH2 OH Ethanoic anhydride 3-Hydroxybutanoic acid + [2]
4. June 2025 · Paper 2 · Q21(c) · 3 marks ·
(c) A student is provided with three unlabelled sample tubes, containing either pyruvic acid, methylglyoxal or acetol. The student carries out three chemical tests on each sample. Complete the table with the expected observations, including ‘no change’ where appropriate. Expected observations Chemical test Pyruvic acid Methylglyoxal Acetol Tollens’ reagent .................................... .................................... .................................... .................................... .................................... .................................... Na2CO3(aq) .................................... .................................... .................................... .................................... .................................... .................................... Cr2O7 2–(aq)/H+(aq) .................................... .................................... .................................... .................................... .................................... .................................... [3]
5. June 2025 · Paper 2 · Q21(e) · 7 marks ·
(e) Complete the flowchart for the reactions of pyruvic acid. excess NH3 Acyl chloride Compound P reagent(s) ............................................................ O NaOH(aq) O OH Pyruvic acid CH3OH / H2SO4 reagent(s) ............................................................ OH H2 / Ni H2N O OH Compound Q [7]
6. June 2024 · Paper 2 · Q17(d) · 2 marks ·
(d) Esterification reaction of (CH3)3COH Reagent(s) and/or catalyst .......................................................................................................................................................... .......................................................................................................................................................... organic product [2]
7. June 2024 · Paper 2 · Q20(a) · 2 marks ·
20 This question is about carboxylic acids and esters. (a) Short-chain carboxylic acids, such as methanoic acid, HCOOH, are soluble in water. Explain, with a labelled diagram, how HCOOH interacts with water when it dissolves. .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [2]
8. June 2024 · Paper 2 · Q20(b)(ii) · 4 marks ·
(ii) Ester F can be prepared from a carboxylic acid in two steps. Step 1 The carboxylic acid is converted into an acyl chloride. Step 2 The acyl chloride is converted into ester F. Write equations for Step 1 and Step 2. Show organic compounds as structures. Step 1 Step 2 [4]
9. June 2024 · Paper 2 · Q20(d) · 4 marks ·
(d) The compound below contains an ester and an amide group. O N O H O Draw the structures of the organic products formed by the complete alkaline hydrolysis of this compound using NaOH(aq). [4]
10. June 2024 · Paper 2 · Q23(b)(i) · 3 marks ·
(b) (i) In Step 2, Na2CO3(aq) removes the sulfuric acid catalyst and any unreacted compound G from the mixture. Write equations for this removal. Removal of sulfuric acid .......................................................................................................................................................... Removal of unreacted compound G O OH OH Compound G [3]
11. June 2024 · Paper 2 · Q23(b)(ii) · 1 marks ·
(ii) Another student suggests that adding aqueous sodium hydroxide would be more effective in removing the sulfuric acid catalyst than Na2CO3(aq). Comment on whether the student’s suggestion is an improvement for the preparation of compound H. .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [1]
12. June 2023 · Paper 2 · Q12 · 1 marks · AO1
12 Which compound reacts with ethanoyl chloride? O A O B O Cl C O D NH2 O Your answer [1]
13. June 2023 · Paper 2 · Q14 · 1 marks · AO1
14 Which compound(s) is/are hydrolysed by HCl (aq) to produce butanoic acid? 1 CH3CH2CH2COOCH3 2 CH3CH2CH2CH2CN 3 CH3CH2CH2CH2Cl A 1, 2 and 3 B Only 1 and 2 C Only 2 and 3 D Only 1 Your answer [1]
14. June 2023 · Paper 2 · Q20(a) · 4 marks · AO2
20 This question is about aromatic compounds containing the –COOH and –OH functional groups. (a) Salicylic acid, shown below, is used in the manufacture of some important medicines. COOH OH Salicylic acid Complete the flowchart for reactions of salicylic acid, by adding the organic products in each box. Br2 Na2CO3(aq) COOH OH propanoic anhydride (CH3CH2CO)2O + [4]
15. June 2023 · Paper 2 · Q22(b) · 9 marks · AO1, 2
(b) Complete the flowchart by filling in each box. reagent(s) ................................... catalyst unsaturated alcohol ................................... diol (major product) reagent(s) ................................... H H reagent(s) C C ................................... H C O H acrolein carboxylic acid reagent(s) ................................... polymer (2 repeat units) acyl chloride [9]
16. June 2023 · Paper 3 · Q5(b)(ii) · 3 marks · AO2
(ii) In this reaction, 1 mol of aspirin reacts with 3 mol of hot NaOH(aq). Complete the equation for the reaction of aspirin with an excess of hot NaOH(aq). Show structures for organic compounds. O OH O + ......................... O [3]
17. June 2023 · Paper 3 · Q6(e) · 6 marks · AO3
TURN OVER FOR QUESTION 6 PART (e) (e)* Three reactions involving sulfuric acid are shown below. Reaction 1 Dilute sulfuric acid is reacted with nickel(II) hydroxide to form a green solution. The solvent is allowed to evaporate leaving hydrated crystals of compound D, with the percentage composition by mass: Ni, 22.33%; S, 12.20%; O, 60.87%; H, 4.60%. Reaction 2 Concentrated sulfuric acid is reacted with hydrogen bromide, HBr, to form three products: • an element which exists as diatomic molecules • a gaseous compound E • a liquid. At RTP, 1.00 dm3 of compound E has a mass of 2.67 g. Reaction 3 Concentrated sulfuric acid acts as a catalyst when 2-hydroxypropanoic acid reacts to form compound F (Mr = 144). In this reaction, 2 mol of 2-hydroxypropanoic acid forms 1 mol of compound F and 2 mol of water. Identify compounds D, E and F and construct equations for the reactions. Show structures for any organic compounds. [6] ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... Additional answer space if required. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...................................................................................................................................................
18. June 2022 · Paper 2 · Q10 · 1 marks · AO1
10 Butyl propanoate is hydrolysed by aqueous sodium hydroxide. Which compound is one of the products of this hydrolysis? A C3H7ONa B C3H5O2Na C C4H9ONa D C4H7O2Na Your answer [1]
19. June 2022 · Paper 2 · Q19(a) · 4 marks · AO2
19 This question is about compounds that contain the carboxylic acid functional group. (a) Carboxylic acids react with alkalis, metals and carbonates to form salts. Write full equations for the following three reactions. Show structures for organic compounds. • the reaction of propanoic acid with aqueous potassium hydroxide: • the reaction of aqueous methanoic acid with magnesium: • the reaction of the α–amino acid, aspartic acid (R=CH2COOH), with an excess of aqueous sodium carbonate, Na2CO3: [4]
20. June 2022 · Paper 2 · Q19(b) · 4 marks · AO2
(b) The structure of 2-hydroxybutanoic acid is shown below. H CH3CH2 C COOH OH 2-hydroxybutanoic acid Fill in the flowchart for reactions involving 2-hydroxybutanoic acid. C6H5COOH / H2SO4 (CH3)2CHOH / H2SO4 reflux reflux H H ............................... CH3CH2 C CN CH3CH2 C COOH OH OH 2-hydroxybutanoic acid NaBH4 [4]
21. June 2022 · Paper 2 · Q20(f) · 2 marks · AO3
(f) Acid anhydrides react in a similar way to acyl chlorides with phenols. Benzoic anhydride is the acid anhydride of benzoic acid, C6H5COOH. Benzoic anhydride reacts with butan-2-ol to form an ester. Suggest an equation for this reaction. Show structures for organic compounds. Use C6H5 for any phenyl groups. [2]
22. June 2022 · Paper 3 · Q6(b)(ii) · 2 marks · AO3
(ii) A ‘vitamin C ester’ tablet contains an ester with the molecular formula C22H38O7. This ester can be prepared by reacting vitamin C with a long chain carboxylic acid, CxHyCOOH, in the presence of an acid catalyst. Vitamin C and the long chain carboxylic acid react in a 1:1 molar ratio. Determine x and y in the formula of this carboxylic acid. x = .............. y = .............. [2]
23. November 2021 · Paper 2 · Q6 · 1 marks ·
6 CH3CH2COOCH3 is heated with aqueous sodium hydroxide to produce two organic products. What are the two organic products? A CH3CH2COOH and CH3OH B CH3CH2COONa and CH3OH C CH3CH2COOH and CH3ONa D CH3CH2COONa and CH3ONa Your answer [1]
24. November 2021 · Paper 2 · Q15 · 1 marks ·
15 Compounds 1, 2 and 3 are heated with NaOH(aq). Which compound(s) react(s)? OH 1 COOH 2 CH2Br 3 A 1, 2 and 3 B Only 1 and 2 C Only 2 and 3 D Only 1 Your answer [1]
25. November 2021 · Paper 2 · Q18(b) · 7 marks · AO1, 2
(b) Complete the flowchart for two synthetic routes to the amino acid valine. ester C7H14O3 .................................................. O HO OH .................................. C5H10O3 acyl chloride C5H9O2Cl .................................................. O H2N OH ........................................... valine haloalkane C5H11NO2 C5H9BrO2 [7]
26. November 2021 · Paper 2 · Q18(d)(i) · 2 marks · AO3
(d) Tablets based on ibuprofen and lysine are now available from pharmacies. These tablets are claimed to act faster than ibuprofen by being absorbed into the body more quickly than ibuprofen alone. One type of these tablets contains a salt of ibuprofen and the amino acid lysine (R = –(CH2)4NH2) in a 1:1 molar proportion. (i) Suggest the structure of each ion in this lysine salt of ibuprofen, including the position of any charges. – ion + ion [2]
27. November 2021 · Paper 2 · Q19(a)(ii) · 7 marks · AO1, 2
(ii) Complete the flowchart below for the synthesis of two compounds starting from prenal. O NaBH4 prenal reagent(s): ......................... reagent(s): .............................. catalyst: .............................. reagent(s): ......................... reagent(s): ......................... catalyst: H+ catalyst: H+ O O O O [7]
28. November 2021 · Paper 2 · Q20(a)(iii) · 3 marks · AO2, 3
(iii) Two molecules of salicylic acid can react together in the presence of an acid catalyst to form compound B. Compound B has three rings and a molecular formula of C14H8O4. Write the equation for this reaction showing the structures of organic compounds. [3]
29. November 2021 · Paper 3 · Q1(e) · 4 marks · AO2
(e) The structure of lactic acid is shown below. OH OH O lactic acid Complete and balance the equations for two reactions of lactic acid. Reaction with sodium carbonate CH3CH(OH)COOH + .................... ............................................................................................... Reaction with aluminium CH3CH(OH)COOH + .................... ............................................................................................... [4]
30. November 2021 · Paper 3 · Q5(c) · 6 marks · AO3
(c)* This question is about two reactions of ammonia. Reaction 1 Excess ammonia is reacted with 4.77 g of copper(II) oxide. The reaction produces 3.81 g of solid E, liquid F and 0.560 g of gas G, which has a volume of 480 cm3 at RTP. Reaction 2 Ammonia reacts with compound H to form compound I, C2H5NO, and chloride salt J. The IR spectrum of I is shown below. 100 transmittance 50 (%) 0 4000 3000 2000 1500 1000 500 wavenumber / cm–1 Identify E, F, G, H, I and J, and write equations for the two reactions. Show your reasoning. 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31. November 2020 · Paper 2 · Q3 · 1 marks · AO1
3 Which of these reagent(s) will not react with HOCH2CH2CH2COOH? A NaCN in ethanol B C2H5OH in the presence of an acid catalyst C (CH3CO)2O D concentrated H2SO4 Your answer [1]
32. November 2020 · Paper 2 · Q7 · 1 marks · AO1
7 Which one of the following reacts with ethanoic acid and with phenol? A Aqueous potassium hydroxide B Bromine C Calcium carbonate D Methanol and an acid catalyst Your answer [1]
33. November 2020 · Paper 2 · Q14 · 1 marks · AO2
14 Which of the following reactions produce propan-1-ol? 1 The alkaline hydrolysis of 1-chloropropane. 2 The acid hydrolysis of propyl methanoate. 3 The acid hydrolysis of propanenitrile. A 1, 2 and 3 B Only 1 and 2 C Only 2 and 3 D Only 1 Your answer [1]
34. November 2020 · Paper 2 · Q17(c)(ii) · 5 marks · AO3
(ii) The chemist develops a three-stage synthesis of compound D from compound C. Complete the flowchart. Show structures for organic compounds. reagent: ...................................... catalyst: ...................................... compound C 1. Sn + HCl 2. Neutralise O HN reagent: ...................................... compound D [5]
35. November 2020 · Paper 2 · Q18(a)(ii) · 2 marks · AO2
(ii) HOOC(CH2)2COOH is soluble in water. Explain, using a labelled diagram, why HOOC(CH2)2COOH is soluble in water. [2]
36. November 2020 · Paper 2 · Q18(b)(iii) · 3 marks · AO1, 2
(iii) A large yield of polymer E can be obtained by reacting a diacyl dichloride with HO(CH2)4OH. The diacyl dichloride is prepared from HOOC(CH2)2COOH. Complete the equation for the formation of a diacyl dichloride from HOOC(CH2)2COOH. O O C (CH2)2 C + .................. HO OH [3]
37. November 2020 · Paper 2 · Q21(b)(ii) · 4 marks · AO2
(ii) A sample of aspartame is hydrolysed with aqueous acid. Draw the structures of the three organic products of the complete acid hydrolysis of aspartame. [4]
38. November 2020 · Paper 3 · Q6(c) · 4 marks · AO3
(c) Carboxylic acids and sulfonic acids both form esters. Sulfonic acid esters can be hydrolysed by aqueous alkali. The equation shows the alkaline hydrolysis of a sulfonic acid ester. CH3SO2OCH3 + OH− → CH3SO2O− + CH3OH In the 3 boxes below, add curly arrows to show the mechanism for this reaction. In the first box, the hydroxide ion acts as a nucleophile. O O – H3C S OCH3 H3C S OCH3 O O OH – OH O H H3C S O – OCH3 O O H3C S O – + HOCH3 O [4]
39. June 2019 · Paper 2 · Q14 · 1 marks · AO1
14 Which chemical(s) can react with phenol? 1 Potassium hydroxide 2 Ethanoyl chloride 3 Nitric acid A 1, 2 and 3 B Only 1 and 2 C Only 2 and 3 D Only 1 Your answer [1]
40. June 2019 · Paper 2 · Q17(a)(i) · 4 marks · AO2
17 This question is about α-amino acids, RCH(NH2)COOH. (a) Table 17.1 shows the R groups in four amino acids. Amino acid R group alanine (ala) CH3– serine (ser) HOCH2– leucine (leu) (CH3)2CHCH2– glycine (gly) H– Table 17.1 (i) In the boxes, draw the organic products for the reactions of serine shown below. (CH3)2CHOH / H2SO4 H+(aq) H O excess CH3COCl H2N C C OH CH2 OH serine [4]
41. June 2019 · Paper 2 · Q18(a)(ii) · 5 marks · AO2
(ii) In the boxes, draw the organic products for the reactions of the functional groups in ester A shown below. Each reaction forms two organic products. + H+(aq) O Br O Ester A excess OH–(aq) + [5]
42. June 2019 · Paper 2 · Q18(a)(iii) · 1 marks · AO1
(iii) Name the type of reactions of ester A shown in (ii). ...................................................................................................................................... [1]
43. June 2019 · Paper 2 · Q18(c) · 1 marks · AO3
(c) Compound B is a structural isomer of ester A. • Compound B reacts with aqueous sodium carbonate. • The 13C NMR spectrum of B has 4 peaks. Draw a possible structure for compound B. [1]
44. June 2019 · Paper 2 · Q18(e)(i) · 6 marks · AO3
(e)* A student intends to synthesise ester C. H O H3C C C O CH3 CH3 Ester C (i) Plan a two-stage synthesis to prepare 12.75 g of ester C starting from 2-methylpropanal, (CH3)2CHCHO. Assume the overall percentage yield of ester C from 2-methylpropanal is 40%. In your answer include the mass of 2-methylpropanal required, reagents, conditions and equations where appropriate. Purification details are not required. [6] ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... Additional answer space if required ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ...........................................................................................................................................
45. June 2019 · Paper 2 · Q20(b)(i) · 4 marks · AO3
(b) An incomplete reaction mechanism is shown below. (i) Complete the mechanism by adding curly arrows and any missing species. – O O H3C C H3C C Cl Cl OH – OH O H3C C + ………… OH [4]
46. June 2019 · Paper 3 · Q2(b) · 1 marks · AO2
(b) In Step 2, explain why the mixture must be acidified so that crystals of benzoic acid appear. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [1]
47. June 2018 · Paper 2 · Q16(c) · 3 marks ·
(c) The flowchart below shows some reactions of compound C. In the boxes, draw the organic products of these reactions. excess CH3OH/H2SO4 Steam COOH HOOC H3PO4 compound C polymerisation repeat unit of polymer [3]
48. June 2018 · Paper 2 · Q21(a) · 3 marks ·
21 This question is about aromatic carboxylic acids and their derivatives. (a) The flowchart below shows some reactions of compound H. In the boxes, draw the organic products of these reactions. Na2CO3(aq) NaOH(aq) O C OH HO compound H Br2 [3]
49. June 2018 · Paper 2 · Q21(b) · 4 marks ·
(b) Compound H is used in the synthesis of polymer I, as shown in the flowchart below. Complete the flowchart by drawing the structure of the acyl chloride and two repeat units of polymer I, and stating the formula of the reagent(s) required for the first stage on the dotted line. O C OH ......................... HO compound H acyl chloride two repeat units of polymer I [4]
50. June 2018 · Paper 3 · Q4(b)(ii) · 6 marks ·
(ii)* A chemist prepares a pure solid sample of paracetamol from 4-nitrophenol in two stages: H Stage 1 Stage 2 HO NO2 Intermediate HO N CH3COCl C CH3 4-nitrophenol paracetamol O Describe a two-stage synthesis of 5.00 g of pure paracetamol from 4-nitrophenol. The overall percentage yield of paracetamol from 4-nitrophenol is 40.0%. In your answer, include the mass of 4-nitrophenol required, the reagents and intermediate, and details of the purification of paracetamol. [6] ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... Additional answer space if required. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ...........................................................................................................................................
51. June 2018 · Paper 3 · Q5(b)(ii) · 1 marks ·
(ii) Write the equation for the equilibrium reaction that takes place. ...................................................................................................................................... [1]
52. June 2018 · Paper 3 · Q5(b)(iii) · 1 marks ·
(iii) Draw the skeletal formula of the ester present in the equilibrium mixture. [1]
53. June 2017 · Paper 2 · Q10 · 1 marks ·
10 Equal amounts of the four compounds are added to the same volume of water. Which compound would produce the most acidic solution? A CH3CONH2 B CH3COOH C CH3COOCH3 D CH3COCl Your answer [1]
54. June 2017 · Paper 2 · Q12 · 1 marks ·
12 0.1 mol of HOOCCH2COOH are reacted with 0.1 mol of aqueous NaOH. How many molecules of water are formed? A 6.02 × 1022 B 3.01 × 1022 C 6.02 × 1023 D 3.01 × 1023 Your answer [1]
55. June 2017 · Paper 2 · Q13 · 1 marks ·
13 Which reagents could be used to prepare CH3CH2CONHCH3? A CH3CH2COCl + CH3NH2 B CH3CH2CONH2 + CH3Br C CH3CH2COONa + CH3NH2 D CH3CH2COCH3 + NH3 Your answer [1]
56. June 2017 · Paper 2 · Q21 · 6 marks ·
21* Compound L is an organic compound containing carbon, hydrogen and oxygen only. The 1H NMR spectrum of compound L is shown below. The numbers by the peaks are the relative peak areas. 9 3 2 2 5 4 3 2 1 0 chemical shift, / ppm δ Compound L is refluxed with aqueous hydrochloric acid, forming two organic compounds M and N. The infrared spectra of M and N are shown below. Infrared spectrum of M Item removed due to third party copyright restrictions. Infrared spectrum of N 100 transmittance (%) 50 0 4000 3000 2000 1500 1000 500 wavenumber / cm–1 Use the information provided to suggest a structure for compound L. Show all of your reasoning. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .................................................................................................................................................... [6]
57. June 2017 · Paper 3 · Q4(b)(i) · 3 marks ·
(b) The structural formula of compound A is repeated below. O HO OH R compound A Two reactions of compound A are carried out. Suggest an equation for each reaction and state the type of reaction. In your equations, draw structures for organic compounds. You can use R for the alkyl group. (i) Magnesium ribbon is added to a solution of compound A. Gas bubbles are seen and the magnesium slowly dissolves. Equation Type of reaction ........................................................................................................... [3]
58. June 2017 · Paper 3 · Q4(b)(ii) · 3 marks ·
(ii) Compound A is heated with a few drops of concentrated sulfuric acid as a catalyst. A cyclic ‘dimer’ of compound A forms. Equation Type of reaction ........................................................................................................... [3]
59. June 2017 · Paper 3 · Q5(a)(ii) · 2 marks ·
(ii) Thiols react with carboxylic acids to form thioesters. Write an equation for the reaction of butane-1-thiol with ethanoic acid. Use structures for all organic compounds with the functional groups clearly displayed. [2]

Mark schemes

1. June 2025 · Paper 2 · Q5
Mark scheme June 2025 Paper 2 Q5
2. June 2025 · Paper 2 · Q9
Mark scheme June 2025 Paper 2 Q9
3. June 2025 · Paper 2 · Q18(c)
Mark scheme June 2025 Paper 2 Q18(c)
4. June 2025 · Paper 2 · Q21(c)
Mark scheme June 2025 Paper 2 Q21(c)
5. June 2025 · Paper 2 · Q21(e)
Mark scheme June 2025 Paper 2 Q21(e)
6. June 2024 · Paper 2 · Q17(d)
Mark scheme June 2024 Paper 2 Q17(d)
7. June 2024 · Paper 2 · Q20(a)
Mark scheme June 2024 Paper 2 Q20(a)
8. June 2024 · Paper 2 · Q20(b)(ii)
Mark scheme June 2024 Paper 2 Q20(b)(ii)
9. June 2024 · Paper 2 · Q20(d)
Mark scheme June 2024 Paper 2 Q20(d)
10. June 2024 · Paper 2 · Q23(b)(i)
Mark scheme June 2024 Paper 2 Q23(b)(i)
11. June 2024 · Paper 2 · Q23(b)(ii)
Mark scheme June 2024 Paper 2 Q23(b)(ii)
12. June 2023 · Paper 2 · Q12
Mark scheme June 2023 Paper 2 Q12
13. June 2023 · Paper 2 · Q14
Mark scheme June 2023 Paper 2 Q14
14. June 2023 · Paper 2 · Q20(a)
Mark scheme June 2023 Paper 2 Q20(a)
15. June 2023 · Paper 2 · Q22(b)
Mark scheme June 2023 Paper 2 Q22(b)
16. June 2023 · Paper 3 · Q5(b)(ii)
Mark scheme June 2023 Paper 3 Q5(b)(ii)
17. June 2023 · Paper 3 · Q6(e)
Mark scheme June 2023 Paper 3 Q6(e)
18. June 2022 · Paper 2 · Q10
Mark scheme June 2022 Paper 2 Q10
19. June 2022 · Paper 2 · Q19(a)
Mark scheme June 2022 Paper 2 Q19(a)
20. June 2022 · Paper 2 · Q19(b)
Mark scheme June 2022 Paper 2 Q19(b)
21. June 2022 · Paper 2 · Q20(f)
Mark scheme June 2022 Paper 2 Q20(f)
22. June 2022 · Paper 3 · Q6(b)(ii)
Mark scheme June 2022 Paper 3 Q6(b)(ii)
23. November 2021 · Paper 2 · Q6
Mark scheme November 2021 Paper 2 Q6
24. November 2021 · Paper 2 · Q15
Mark scheme November 2021 Paper 2 Q15
25. November 2021 · Paper 2 · Q18(b)
Mark scheme November 2021 Paper 2 Q18(b)
26. November 2021 · Paper 2 · Q18(d)(i)
Mark scheme November 2021 Paper 2 Q18(d)(i)
27. November 2021 · Paper 2 · Q19(a)(ii)
Mark scheme November 2021 Paper 2 Q19(a)(ii)
28. November 2021 · Paper 2 · Q20(a)(iii)
Mark scheme November 2021 Paper 2 Q20(a)(iii)
29. November 2021 · Paper 3 · Q1(e)
Mark scheme November 2021 Paper 3 Q1(e)
30. November 2021 · Paper 3 · Q5(c)
Mark scheme November 2021 Paper 3 Q5(c)
31. November 2020 · Paper 2 · Q3
Mark scheme November 2020 Paper 2 Q3
32. November 2020 · Paper 2 · Q7
Mark scheme November 2020 Paper 2 Q7
33. November 2020 · Paper 2 · Q14
Mark scheme November 2020 Paper 2 Q14
34. November 2020 · Paper 2 · Q17(c)(ii)
Mark scheme November 2020 Paper 2 Q17(c)(ii)
35. November 2020 · Paper 2 · Q18(a)(ii)
Mark scheme November 2020 Paper 2 Q18(a)(ii)
36. November 2020 · Paper 2 · Q18(b)(iii)
Mark scheme November 2020 Paper 2 Q18(b)(iii)
37. November 2020 · Paper 2 · Q21(b)(ii)
Mark scheme November 2020 Paper 2 Q21(b)(ii)
38. November 2020 · Paper 3 · Q6(c)
Mark scheme November 2020 Paper 3 Q6(c)
39. June 2019 · Paper 2 · Q14
Mark scheme June 2019 Paper 2 Q14
40. June 2019 · Paper 2 · Q17(a)(i)
Mark scheme June 2019 Paper 2 Q17(a)(i)
41. June 2019 · Paper 2 · Q18(a)(ii)
Mark scheme June 2019 Paper 2 Q18(a)(ii)
42. June 2019 · Paper 2 · Q18(a)(iii)
Mark scheme June 2019 Paper 2 Q18(a)(iii)
43. June 2019 · Paper 2 · Q18(c)
Mark scheme June 2019 Paper 2 Q18(c)
44. June 2019 · Paper 2 · Q18(e)(i)
Mark scheme June 2019 Paper 2 Q18(e)(i)
45. June 2019 · Paper 2 · Q20(b)(i)
Mark scheme June 2019 Paper 2 Q20(b)(i)
46. June 2019 · Paper 3 · Q2(b)
Mark scheme June 2019 Paper 3 Q2(b)
47. June 2018 · Paper 2 · Q16(c)
Mark scheme June 2018 Paper 2 Q16(c)
48. June 2018 · Paper 2 · Q21(a)
Mark scheme June 2018 Paper 2 Q21(a)
49. June 2018 · Paper 2 · Q21(b)
Mark scheme June 2018 Paper 2 Q21(b)
50. June 2018 · Paper 3 · Q4(b)(ii)
Mark scheme June 2018 Paper 3 Q4(b)(ii)
51. June 2018 · Paper 3 · Q5(b)(ii)
Mark scheme June 2018 Paper 3 Q5(b)(ii)
52. June 2018 · Paper 3 · Q5(b)(iii)
Mark scheme June 2018 Paper 3 Q5(b)(iii)
53. June 2017 · Paper 2 · Q10
Mark scheme June 2017 Paper 2 Q10
54. June 2017 · Paper 2 · Q12
Mark scheme June 2017 Paper 2 Q12
55. June 2017 · Paper 2 · Q13
Mark scheme June 2017 Paper 2 Q13
56. June 2017 · Paper 2 · Q21
Mark scheme June 2017 Paper 2 Q21
57. June 2017 · Paper 3 · Q4(b)(i)
Mark scheme June 2017 Paper 3 Q4(b)(i)
58. June 2017 · Paper 3 · Q4(b)(ii)
Mark scheme June 2017 Paper 3 Q4(b)(ii)
59. June 2017 · Paper 3 · Q5(a)(ii)
Mark scheme June 2017 Paper 3 Q5(a)(ii)