Answer :
The wavenumber that corresponds to the carbon/carbon triple bond area on an IR spectra is 2100–2300 cm–1.
Alkynes in IR Spectroscopy Training Alkynes are substances with a triple bond between carbon atoms (-CC-). Between 2260 and 2100 cm-1, a faint band represents the -CC stretch. Due to the rarity of organic substances that exhibit an absorption in this area, this can be a crucial diagnostic tool. In compounds known as alkenes or alkynes, carbon atoms can also form double or triple bonds. An sp 2-hybridized orbital and a p-orbital that wasn't engaged in the hybridization combine to produce a double bond. An sp-hybridized orbital and two p-orbitals from each atom combine to form a triple bond.
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