Final answer:
The 2200-2300 cm⁻¹ range on IR spectra indicates the presence of stretch vibrations, often associated with alkynes which have carbon-carbon triple bonds.
Step-by-step explanation:
The 2200-2300 cm⁻¹ range on IR (Infrared Spectroscopy) spectra is typically associated with the stretching vibrations of certain chemical bonds. Specifically, in organic molecules, alkynes exhibit characteristic IR absorbance peaks in the range of 2100-2250 cm⁻¹ due to the carbon-carbon triple bond stretching.
This information can be used to identify the presence of alkyne functional groups within a compound. It is important to note that wavenumbers are used in IR spectroscopy, which denotes how many waves fit into one centimeter. Additionally, IR spectra are displayed with peaks pointing downward, showing regions where light is absorbed more strongly by the sample.