Terminal alkynes show a stronger signal than internal alkynes on an IR spectrum around 2400 cm^-1.

Name: Terminal alkynes show a stronger signal than internal alkynes on an IR spectrum around 2400 cm -1 .
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Terminal alkynes have a stronger signal than internal alkynes on an IR spectrum around 2400 cm-1 due to the presence of a terminal carbon-hydrogen bond. This bond has a higher dipole moment than the carbon-carbon bond in internal alkynes, resulting in a stronger IR absorption signal.

Terminal Alkynes Show a Stronger Signal Than Internal Alkynes on an IR