Combined Techniques (OCR A-Level Chemistry A): Flashcards
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Practise the cards
10 cards from this deck
Info from elemental analysis
Info from elemental analysis
Empirical formula
Empirical formula definition
Empirical formula definition
Simplest whole number ratio of atoms
peak location in mass spectrum
peak location in mass spectrum
Highest m/z value
IR wavenumber for group
IR wavenumber for group
Around 1710 cm⁻¹ (strong)
NMR peak count shows
NMR peak count shows
Number of different C environments
3 pieces of info from NMR
3 pieces of info from NMR
No. of peaks, integration, splitting
n+1 rule in NMR
n+1 rule in NMR
n adjacent H → (n+1) peaks
for aromatic protons (ppm)
for aromatic protons (ppm)
6.9-8.0 ppm
Effect of symmetry on NMR peaks
Effect of symmetry on NMR peaks
Reduces number of peaks
peak: highest m/z or tallest?
peak: highest m/z or tallest?
Highest m/z (not always tallest)