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In IR spectroscopy, what does a peak in the spectrum represent?

Practice Questions

Q1
In IR spectroscopy, what does a peak in the spectrum represent?
  1. Absence of molecular vibrations
  2. Presence of a specific bond or functional group
  3. Temperature of the sample
  4. Concentration of the sample

Questions & Step-by-Step Solutions

In IR spectroscopy, what does a peak in the spectrum represent?
  • Step 1: Understand that IR spectroscopy is a technique used to identify molecules based on how they absorb infrared light.
  • Step 2: Know that different bonds and functional groups in a molecule absorb infrared light at specific frequencies.
  • Step 3: Recognize that when a molecule absorbs infrared light, it causes a peak to appear in the IR spectrum.
  • Step 4: Realize that each peak corresponds to a specific bond or functional group in the molecule.
  • Step 5: Conclude that by analyzing the peaks in the IR spectrum, you can determine which bonds or functional groups are present in the sample.
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