Chapter 7.1: Structure of Alkynes

Question 1

What orbitals make up a triple bond?

Answer 1

• A triple bond is described in terms of the overlap of sp hybrid orbitals of adjacent carbon atoms to form a sigma bond, the overlap of parallel 2p orbitals to form one pi bond, and the overlap of another pair of parallel 2p orbitals to form a second pi bond

Question 2

What is an unsaturated hydrocarbon that contains one or more carbon-carbon triple bonds?

Answer 2

alkyne

Question 3

Compare the strength of pi bonds between alkynes and alkenes

Answer 3

• A pi bond in an alkyne is weaker than a pi bond in an alkene

Question 4

Define alkyne

Answer 4

an unsaturated hydrocarbon that contains one or more carbon-carbon triple bonds