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CHM 102 Practice Questions Objective Question

Question

Which of the following statements correctly describes the general reactivity of alkynes?
Options
A An alkyne is an electron-rich molecule and therefore reacts as a nucleophile.
B The σ bonds of alkynes are higher in energy than the bonds and are thus more reactive.
C Unlike alkenes, alkynes fail to undergo electrophilic addition reactions.
D Alkynes are generally more reactive than alkenes.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Alkynes are generally more reactive than alkenes because the pi electrons are held less tightly and are more polarizable. They undergo electrophilic addition reactions readily (like alkenes). The sigma bonds are not higher in energy.

Hint

How does alkyne reactivity compare to alkene reactivity?

Question Info