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| 1. |
Write a note on the acidity of acetylene. |
| Answer» <p>The C-H bonding electrons in acetylene are contained in ansphybrid orbital. In the conjugate base of acetylene, acetylide carbanion, thissphybrid orbital holds an unshared electron pair. Thesphybrid orbital holding this unshared electron pair has greaterscharacter compared to thesp2orsp3orbitals holding an electron pair in analogous vinylic or aliphatic carbanions. This allows the unshared electron pair to be held at lower energy, which allows acetylene to have measurable, though still very weak, acidity.</p> | |