Proton NMR Spectroscopy (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many pieces of information does a proton NMR spectrum reveal about a molecule?
How many pieces of information does a proton NMR spectrum reveal about a molecule?
Four
What is the chemical shift value of the TMS reference standard in proton NMR?
What is the chemical shift value of the TMS reference standard in proton NMR?
ppm
At what chemical shift range do carboxylic acid () protons typically appear?
At what chemical shift range do carboxylic acid () protons typically appear?
- ppm
What is the most reliable method for identifying equivalent protons in a molecule?
What is the most reliable method for identifying equivalent protons in a molecule?
Look for planes of symmetry
How many peaks appear in the proton NMR spectrum of butanedioic acid ()?
How many peaks appear in the proton NMR spectrum of butanedioic acid ()?
Two
If integration values are 4.0 and 6.0, what is the simplified ratio of protons?
If integration values are 4.0 and 6.0, what is the simplified ratio of protons?
2:3
According to the rule, how many peaks appear for a proton with 2 adjacent protons?
According to the rule, how many peaks appear for a proton with 2 adjacent protons?
3 (triplet)
What splitting pattern indicates a group on an adjacent carbon?
What splitting pattern indicates a group on an adjacent carbon?
Quartet
Why are and proton peaks typically broad in NMR spectra?
Why are and proton peaks typically broad in NMR spectra?
They undergo hydrogen bonding
What happens to and peaks after adding to an NMR sample?
What happens to and peaks after adding to an NMR sample?
They disappear