Which statement below best explains why the K_a of acetylene is greater than that of ethylene? A) Acetylide anions are resonance stabilized. B) The 4 $\pi$ electrons of the acetylide anion better stabilize a negative charge. C) The electronegativity of sp carbons is greater than that of sp² carbons. D) The electronegativity of sp carbons is less than that of sp² carbons. E) Acetylene has only two hydrogen atoms while ethylene has four.

Question

Quizplus · Accepted Answer

The electronegativity of sp hybridized carbons (as in acetylene) is greater than that of sp^2 hybridized carbons (as in ethylene), which allows sp carbons to better stabilize a negative charge, contributing to the greater acidity of acetylene compared to ethylene.

Which Statement Below Best Explains Why the Ka of Acetylene π\piπ

Which Statement Below Best Explains Why the K_a of Acetylene $\pi$