Determination of Molecular Structure by Spectroscopy (VCE SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which technique identifies functional groups in an organic compound?
Which technique identifies functional groups in an organic compound?
Infrared spectroscopy
Where does the molecular ion peak appear in a mass spectrum?
Where does the molecular ion peak appear in a mass spectrum?
At the highest value
What wavenumber shows a broad O-H absorption in IR spectroscopy?
What wavenumber shows a broad O-H absorption in IR spectroscopy?
Around
In proton NMR, how many lines appear in a splitting pattern?
In proton NMR, how many lines appear in a splitting pattern?
where = neighboring H atoms
What does the number of peaks in a C NMR spectrum indicate?
What does the number of peaks in a C NMR spectrum indicate?
Number of different C environments
What is the first step in systematic structure determination?
What is the first step in systematic structure determination?
Determine chemical formula
How do you confirm a sample is pure?
How do you confirm a sample is pure?
No extra/missing peaks vs reference
What are reference samples used for?
What are reference samples used for?
Known standards for comparison
What proton NMR pattern is typical of an ethyl group?
What proton NMR pattern is typical of an ethyl group?
Triplet-quartet combination
Which IR evidence confirms an ester functional group?
Which IR evidence confirms an ester functional group?
C=O present, no O-H band