Chemistry · Spectroscopy
Which of the following statements is true concerning Infrared (IR) spectroscopy?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When the infrared light frequency matches the frequency of bond vibration in a molecule, a peak is recorded on the spectrum due to absorption.✓
- 2It is primarily useful in determining the size and shape of a compound's carbon skeleton.
- 3It shines infrared light on a compound and records the position where the light is blocked by the compound, which directly results in the spectrum peaks.
- 4Functional groups can be uniquely identified by looking only in the fingerprint region of the spectrum.
Correct answer
When the infrared light frequency matches the frequency of bond vibration in a molecule, a peak is recorded on the spectrum due to absorption.
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