Infrared spectroscopy

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5 Terms

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What happens in bonds that allow us to pass IR through them?

Bonds vibrate. Strong bonds vibrate faster than weaker bonds. Heavy atoms vibrate slower than lighter atoms.

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How does this let us plot IR spectroscopy graphs?

Vibrating bonds can absorb IR. IR can be passed through organic molecules causing absorption of specific frequencies.

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What do the peaks show?

Absorption of IR at different frequencies.

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Fingerprint region

complex series of peaks specific to a molecule. Usually ran through a computer

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How is IR spectroscopy used to prevent global warming?

  • can monitor CO and NO in car exhausts.

  • Breathalyser = monitor alcohol in breath.