Physical and Chemical Properties

How do the physical and chemical properties of alkynes differ from those of alkanes and alkenes?

In contrast to alkanes and alkenes, alkynes are quite unstable.

This property makes alkynes very reactive and they are used in industrial and manufacturing settings, e.g. acetylene torches.

What is the infrared absorption of a carbon-carbon triple bond?

Table 44.1: Infrared absorption of C$\equiv$C.

Bond Frequency	($cm^{-1}$)
C$\equiv$C	$\sim$2200