plumiPredicting NMR spectra, TMS and D2O: OCR A‑Level Chemistry A questions
OCR A-Level Chemistry A past-paper questions on 6.3.2.3 Predicting NMR spectra, TMS and D2O, 2016–2025, with mark schemes and examiner’s reports where available.
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Q1(b)
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All 9 questions on Predicting NMR spectra, TMS and D2O, as a list
- June 2025, Paper 3, Q1(b) (3 marks): This question looks at proton NMR spectra of dibromoalkanes. Predict the following. Compound Number of peaks CH2 splitting pattern(s) BrCH2CH2Br BrCH2CH2CH2Br [
- June 2023, Paper 2, Q1 (1 mark): Which compound is used for proton exchange in NMR spectroscopy? A CCl4 B CDCl3 C D2O D Si(CH3)4 Your answer [1]
- June 2023, Paper 2, Q17(d) (5 marks): There are 4 structural isomers of C4H10O that are alcohols. A student predicts that these structural isomers could be distinguished using carbon-13 NMR spectros
- 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]
- November 2020, Paper 2, Q17(c)(i) (2 marks): Predict the number of peaks in the 13C NMR spectra of compounds C and D. Compound C Compound D Number of peaks [2]
- November 2020, Paper 2, Q22(a) (2 marks): Explain the use of two deuterated compounds in NMR spectroscopy. [2]
- 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
- June 2018, Paper 2, Q1 (1 mark): Which compound is used as a standard for NMR chemical shift measurements? A Si(CH3)4 B CDCl3 C D2O D CCl4 Your answer [1]
- June 2018, Paper 2, Q18(a)(i) (3 marks): A student carries out the nitration of phenol with dilute nitric acid to produce 2-nitrophenol and 4-nitrophenol. A small amount of 3-nitrophenol is also produc
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