eng Science and Education Publishing World Journal of Chemical Education 2375-1657 2021-11-15 9 3 94 95 10.12691/wjce-9-3-5 WJCE2021935 article R. Sanjeev 1 D. A. Padmavati 2 V. Jagannadham jagannadham1950@yahoo.com 2 Department of Chemistry, Geethanjali College of Engineering and Technology, Cheeryal-501301, Telangana, India Department of Chemistry, Osmania University, Hyderabad-500007, India Sudden decrease of nearly more than two orders of magnitude of pKa units of ynoic series of compounds is explained based on the electronegativity differences of sp, sp2 and sp3 carbons and on the subsequent stability of the corresponding anions. Both resonance and inductive effects operate in tandem to stabilize the ynoic anions. http://pubs.sciepub.com/wjce/9/3/5/wjce-9-3-5.pdf Ynoic compounds chemical education graduate research; pH and pK_a