plumiForming and hydrolysing condensation polymers: OCR A‑Level Chemistry A questions
OCR A-Level Chemistry A past-paper questions on 6.2.3.1 Forming and hydrolysing condensation polymers, 2016–2025, with mark schemes and examiner’s reports where available.
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Open the full PDFYour answerQ18(b)(ii)
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Open the full PDFYour answerQ20(d)
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All 12 questions on Forming and hydrolysing condensation polymers, as a list
- June 2025, Paper 2, Q7 (1 mark): What are the organic products of the acid hydrolysis of CH3CH2CONHCH3? CH3CH2COO– + CH3NH3 + A + B CH3CH2COOH + CH3NH3 C CH3CH2COOH + CH3NH2 CH3CH2COO– + CH3NH2
- June 2025, Paper 2, Q18(b)(ii) (1 mark): The polymer formed from 3-hydroxybutanoic acid can be hydrolysed. This makes the polymer biodegradable. Suggest what feature in the structure of this polymer al
- June 2024, Paper 2, Q12 (1 mark): 1,6-Diaminohexane, H2N(CH2)6NH2, reacts with hexanedioyl dichloride, Cl OC(CH2)4COCl to form a polyamide and one other product. What is the other product formed
- June 2024, Paper 2, Q20(d) (4 marks): 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 thi
- June 2024, Paper 2, Q22(a) (3 marks): A polymer is formed from 500 molecules of this α-amino acid. Determine the molar mass of this polymer. Give your answer to the nearest whole number. molar mass
- June 2023, Paper 2, Q21(c)(ii) (4 marks): A student hydrolyses compound E with dilute hydrochloric acid, HCl (aq). Draw the structures of the organic products formed by this hydrolysis. [4]
- November 2020, Paper 2, Q18(b)(ii) (1 mark): Governments are encouraging the development of biodegradable polymers to reduce dependency on persistent plastic waste derived from fossil fuels. Polymer E is a
- November 2020, Paper 2, Q21(b)(ii) (4 marks): 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]
- June 2019, Paper 2, Q18(d) (2 marks): A polyester is formed from 200 molecules of 4-hydroxybenzoic acid. What is the relative molecular mass, Mr, of the polyester? Mr = g mol−1 [2]
- June 2018, Paper 2, Q17(c) (3 marks): α-Amino acids can react to form proteins. A short section of a protein chain is shown below. HO H O CH2 CH N C N C CH CH2 H O CH2 C O H2N A student hydrolyses t
- June 2018, Paper 2, Q21(b) (4 marks): 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
- June 2017, Paper 2, Q18(a)(iv) (3 marks): Compound I is the monomer for the biodegradable polymer J. Draw two repeat units of polymer J and suggest a reason why it is biodegradable. [3]
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