Question Detail

CHM 102 Alkynes: Structure, Bonding, and Nomenclature Objective Question
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Question

Why is the C–H bond of a terminal alkyne more acidic than the C–H bonds of alkanes or alkenes?
Options
A The sp hybridized carbon is more electronegative due to 50% s‑character
B The triple bond is electron‑withdrawing
C The conjugate base (acetylide) is stabilized by the sp hybrid orbital
D All of the above
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Greater s‑character (50%) makes the carbon more electronegative, and the resulting acetylide ion is stabilized by the sp hybrid orbital.

Hint

Higher s‑character = more electronegative = more acidic.

Question Info

Course: CHM 102
Topic: Alkynes: Structure, Bonding, and Nomenclature
Type: Objective
Difficulty: Not specified
Question 551 of 1999
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