Chapter 7: C-13 NMR, H-1 NMR and Combined Spectroscopy

A-level ChemistryModule 6: Organic Chemistry & Analysis9 topicsHigher

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Module 6: Organic Chemistry and Analysis: C-13 NMR, H-1 NMR and Combined Spectroscopy - Authored Long Answer Questions

Examiner-style long-answer practice with automatic marking, improvement advice and ProofCoach tracking.

4 questions25 marks37.5 min

standard / hard

6 marksdescribestandardOCR A

For C-13 NMR, H-1 NMR and Combined Spectroscopy, describe how NMR environments, splitting and integration applies to unknown ester analysed by NMR.

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6 markscalculatehardOCR A

Using unknown ester analysed by NMR, calculate a relevant OCR A C-13 NMR, H-1 NMR and Combined Spectroscopy quantity and explain the physical or chemical meaning of the answer. Show equation, substitution, answer and unit.

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7 marksexplainhardOCR A

C-13 NMR, H-1 NMR and Combined Spectroscopy: Chemical shift (ppm) vs Relative peak area (%)

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The graph for C-13 NMR, H-1 NMR and Combined Spectroscopy shows data from unknown ester analysed by NMR. Explain the pattern using the data and relevant chemistry principles.

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6 marksevaluatestandardOCR A

In unknown ester analysed by NMR, evaluate the experimental method or model assumptions used when applying NMR environments, splitting and integration.

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6. Chromatography, IR and Mass Spectrometry

End of Module 6: Organic Chemistry & Analysis

Key learning objectives

Understand the key principles behind C-13 NMR, H-1 NMR and Combined Spectroscopy.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.