The general formula for alkynes is C_nH_(2n-2), where n is the number of carbon atoms.

Acetylene (C2H2) is the simplest alkyne.

Alkynes can undergo electrophilic addition reactions due to the presence of the triple bond.

Hydroboration followed by oxidation converts alkynes to cis-alkenes.

Hydrogenation of an alkyne will add hydrogen across the triple bond, converting it to an alkene.

Alkynes can be prepared by the dehydrohalogenation of alkyl halides.

Alkynes are generally less reactive than alkenes due to the stability of the triple bond.

Alkynes have a higher boiling point than alkenes due to stronger intermolecular forces.

Alkynes are more acidic than alkenes due to the sp hybridization of the carbon atoms.

Alkynes can undergo hydrogenation, halogenation, and hydrohalogenation.

Hydrogenation is used to convert alkynes to alkenes.

Dehydrohalogenation of vicinal dihalides can be used to prepare alkynes from alkenes.

Ozonolysis of an alkyne can yield a diketone.

The hydration of an alkyne using H2O in the presence of H2SO4 leads to the formation of a ketone.

Bromine water can be used to distinguish between an alkyne and an alkene, as alkynes will decolorize it.

Hydrogenation using H2 in the presence of a catalyst like Pd converts alkynes to alkenes.

H2 in the presence of Lindlar's catalyst is used to convert alkynes to cis-alkenes.

Bromine water is used to test for the presence of alkynes, which will decolorize the solution.

Pd/BaSO4 is used as a catalyst for the selective hydrogenation of alkynes to form alkenes.

H2 in the presence of Lindlar's catalyst is used to convert an alkyne to a cis-alkene.