Students undertake the synthesis and analysis of aspirin.
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Aspirin experiment
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Chemistry Outreach: Aspirin
Level
Category
Specification
- Northern Ireland
- England
- A/AS level
- AQA Chemistry
- Organic chemistry
- Carboxylic acids and derivatives
- Nuclear magnetic resonance spectroscopy
- Nuclear magnetic resonance spectroscopy
- ¹H NMR spectra are obtained using samples dissolved in deuterated solvents or CCl₄.
- Use ¹H NMR and ¹³C NMR spectra and chemical shift data from the Chemistry Data Booklet to suggest possible structures or part structures for molecules.
- Use integration data from ¹H NMR spectra to determine the relative numbers of equivalent protons in the molecule.
- Use the n+1 rule to deduce the spin–spin splitting patterns of adjacent, non-equivalent protons, limited to doublet, triplet and quartet formation in aliphatic compounds.
- Nuclear magnetic resonance spectroscopy
- Organic analysis
- Practical assessment
- Organic chemistry
- Edexcel Chemistry
- Core Practicals
- Topic 7: Modern Analytical Techniques I
- Topic 19: Modern analytical techniques
- Topic 19B: Nuclear magnetic resonance (NMR)
- 5 i. be able to use data from high resolution ¹H NMR spectroscopy to: predict the different types of proton present in a molecule, given values of chemical shift, δ
- 5 ii. relate relative peak areas, or ratio numbers of protons, to the relative numbers of ¹H atoms in different environments
- 5 iii. deduce the splitting patterns of adjacent, non-equivalent protons using the (n+1) rule and hence suggest the possible structures for a molecule
- 5 iv. predict the chemical shifts and splitting patterns of the ¹H atoms in a given molecule
- Topic 19B: Nuclear magnetic resonance (NMR)
- OCR Chemistry A
- Module 4: Core organic chemistry
- Module 6: Organic chemistry and analysis
- 6.2 Nitrogen compounds, polymers and synthesis
- 6.3 Analysis
- 6.3.2 Spectroscopy
- bi) analysis of a high resolution proton NMR spectrum of an organic molecule to make predictions about: i) the number of proton environments in the molecule
- bii) analysis of a high resolution proton NMR spectrum of an organic molecule to make predictions about: ii) the different types of proton environment present, from chemical shift values
- biii) analysis of a high resolution proton NMR spectrum of an organic molecule to make predictions about: iii) the relative numbers of each type of proton present from relative peak areas, using integration traces or ratio numbers, when required
- biv) analysis of a high resolution proton NMR spectrum of an organic molecule to make predictions about: iv) the number of non-equivalent protons adjacent to a given proton from the spin– spin splitting pattern, using the n+1 rule
- bv) analysis of a high resolution proton NMR spectrum of an organic molecule to make predictions about: v) possible structures for the molecule
- eiii) deduction of the structures of organic compounds from different analytical data including: iii) IR spectra
- eiv) deduction of the structures of organic compounds from different analytical data including: iv) NMR spectra
- 6.3.2 Spectroscopy
- AQA Chemistry
- A/AS level
- Scotland
- Wales
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