Photo AI
By referring to the diagram of the infrared spectrum of aspirin, or otherwise, give a simple explanation of the principle of infrared spectrometry - Leaving Cert Chemistry - Question i - 2016
Question i
By referring to the diagram of the infrared spectrum of aspirin, or otherwise, give a simple explanation of the principle of infrared spectrometry. 
Answer
Infrared spectrometry is based on the principle that molecules, including compounds and functional groups, can absorb infrared radiation. This absorption occurs at specific frequencies, which correspond to the energy levels associated with the vibrations of chemical bonds within the molecules.
Step 2
Characterize Different Frequencies
Answer
Each molecule absorbs infrared radiation at characteristic frequencies, which are indicative of its structural features. By examining the infrared spectrum, one can identify these unique frequencies, allowing for the interpretation of the molecular composition and functional groups present in the sample.