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EnglandChemistryQuick questions
Topic 19: Modern Analytical Techniques - NMR and Chromatography
Quick questions on Modern Analytical Techniques: NMR and Chromatography (Topic 19) - Edexcel A-Level Chemistry
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is reading a proton spectrum?Show answer
Three pieces of information come from each set of peaks: - Number of peaks equals the number of proton environments. - Integration (the step height or area) gives the whole-number ratio of protons. - Splitting uses the rule: a singlet has no adjacent protons, a doublet has one, a triplet two, a quartet three. Typical shifts include near , near , and (aldehyde) near .
What is q1?Show answer
State what the number of peaks in a carbon-13 NMR spectrum tells you. [1 mark]
What is q2?Show answer
A proton NMR peak is split into a quartet. State how many protons are on the neighbouring carbon. [1 mark]
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