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CHM 102 Practice Questions Objective Question
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Question

Which brief statement most accurately describes why alkenes react the way they do?
Options
A C=C double bonds are weak.
B A π bond is lost but a stronger σ bond is gained.
Correct Answer
C C=C double bonds are unstable.
D C=C π bonds are attacked by nucleophiles.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Alkenes undergo addition reactions because the π bond (which is weaker) is broken, and two new σ bonds are formed. The energy released from forming σ bonds is greater than the energy required to break the π bond, making the reaction thermodynamically favorable.

Hint

What is the thermodynamic driving force for alkene addition reactions?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1200 of 1999
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