Alkynes undergo acid-catalyzed addition of water across the triple bond in the presence of mercuric ion catalyst. The products are enol and keto. I want to know why is keto more stable than enol.
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$\begingroup$ Try a Google search... "keto-enol tautomerism" $\endgroup$– orthocresolJan 6, 2016 at 15:34
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6$\begingroup$ chemistry.stackexchange.com/questions/18904/… $\endgroup$– MithoronJan 6, 2016 at 15:36
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It's is basically because in keto form the C=O bond is more stable than the C=C bond in enol. And the difference is probably close to 12 kcal.
