Most acidic proton among the highlighted protons of $\mathbf{H O C H}_2 \mathbf{C H}_2 \mathbf{C H}_

Question

Most acidic proton among the highlighted protons of $\mathbf{H O C H}_2 \mathbf{C H}_2 \mathbf{C H}_2 \mathbf{C} \equiv \mathbf{C H}$ is

Professor PC Thomas Classes · Answer

Terminal alkyne protons ($\equiv C-H$) are sp hybridized and significantly more acidic than alcohol ($O-H$) or alkyl protons.