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Proton NMR spectra and splitting: OCR A‑Level Chemistry A questions

OCR A-Level Chemistry A past-paper questions on 6.3.2.2 Proton NMR spectra and splitting, 2016–2025, with mark schemes and examiner’s reports where available.

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  1. Q9

    June 2023 · Paper 2

    1 mark6.3.2.2 Proton NMR spectra and splitting
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  2. Q12

    June 2022 · Paper 2

    1 mark6.3.2.2 Proton NMR spectra and splitting
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  3. Q18(c)

    June 2022 · Paper 2

    4 marks6.3.2.2 Proton NMR spectra and splitting
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  4. Q1(c)(i)

    June 2022 · Paper 3

    2 marks6.3.2.2 Proton NMR spectra and splitting6.3.2.3 Predicting NMR spectra, TMS and D2O
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  5. Q1(c)(ii)

    June 2022 · Paper 3

    2 marks6.3.2.2 Proton NMR spectra and splitting
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  6. Q18(b)

    June 2019 · Paper 2

    4 marks6.3.2.3 Predicting NMR spectra, TMS and D2O6.3.2.2 Proton NMR spectra and splitting
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  7. Q6

    June 2018 · Paper 2

    1 mark6.3.2.2 Proton NMR spectra and splitting
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  8. Q11

    June 2017 · Paper 2

    1 mark6.3.2.2 Proton NMR spectra and splitting
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All 8 questions on Proton NMR spectra and splitting, as a list
  1. June 2023, Paper 2, Q9 (1 mark): Which compound has the greatest number of peaks in its proton NMR spectrum? O A O Br B Br O O C OH HO OH O D Your answer [1]
  2. June 2022, Paper 2, Q12 (1 mark): Which compound produces two triplets in its 1H NMR spectrum? A CH3CH2COOCH2CH3 B CH3CH2COCH2CH3 C HOOCCH2CH2COOH D HOOCCH2CH2CH2COOH Your answer [1]
  3. June 2022, Paper 2, Q18(c) (4 marks): The organic compound H contains carbon, hydrogen and oxygen only and has an Mr of 114.0. Compound H has two carbonyl groups and no other functional groups. The
  4. June 2022, Paper 3, Q1(c)(i) (2 marks): Fill in the table to predict the splitting patterns in the proton NMR spectrum of the organic compound. Proton environment Splitting pattern 1 2 3 4 [2]
  5. June 2022, Paper 3, Q1(c)(ii) (2 marks): The table shows the chemical shifts for the peaks in the proton NMR spectrum at proton environments 2 and 3. Proton environment 2 3 Chemical shift, δ 2.5 ppm 3.
  6. June 2019, Paper 2, Q18(b) (4 marks): The protons in ester A are in four different environments, labelled 1– 4 on the structure below. 1 3 O 4 CH2 CH2 C Br CH2 O CH3 2 Complete the table to predict
  7. June 2018, Paper 2, Q6 (1 mark): What is the number of peaks in the 1H NMR spectrum of HOOCCH2CHOHCH2COOH? 6 A 3 B 4 C 5 D 6 Your answer [1]
  8. June 2017, Paper 2, Q11 (1 mark): The compound below is analysed by 1H NMR spectroscopy. O O HO OH How many peaks are observed in the 1H NMR spectrum? A 5 B 4 C 3 D 2 Your answer [1]

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