Flashcards
Infrared Spectroscopy
Cards in this deck (7)
- 1What does an infrared spectrometer produce?A spectrum that shows you what frequencies of radiation the bonds in a molecule are absorbing so you can use it to identify the functional groups in the molecule
- 2How does infrared spectroscopy work?A beam of IR radiation is passed through a sample of a chemical. The IR radiation is absorbed by the covalent bonds in the molecules, increasing their vibrational energy. Bonds between different atoms absorb different frequencies of IR radiation
- 3Describe the infrared spectrum for this molecule:
- 4Name two applications of IR spectroscopyBreathalysers
Monitoring pollutants - 5How do breathalysers work?The amount of ethanol vapour in the driver's breath is found by measuring the intensity of the peak corresponding to the C-H bond in the IR spectrum
- 6In breathalysers, why is the C-H bond chosen as opposed to the O-H bond?The C-H bond is not affected by the water vapour in the breath
- 7How is infrared spectroscopy used to monitor the concentrations of polluting gases?Polluting gases include carbon monoxide and nitrogen monoxide (both present in car emissions). The intensity of the peaks corresponds to the C≡C or N≡O bonds can be studied to monitor their levels
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- User has deleted their subject information Flashcards on Infrared Spectroscopy, created by Deleted user on 12/03/2018.
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- Deleted user · Mar 2018
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- Mar 12, 2018
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- Created by Yinka F · Mar 9, 2018
- Copied by Yinka F · Mar 12, 2018
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