Hydration of propyne (1-propyne) with HgSO4/H2SO4 yields which ketone?

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Multiple Choice

Hydration of propyne (1-propyne) with HgSO4/H2SO4 yields which ketone?

Hydration of terminal alkynes with HgSO4/H2SO4 follows Markovnikov addition of water, where the OH attaches to the more substituted carbon (the internal carbon attached to the R group) and hydrogen adds to the terminal carbon. This forms a vinyl alcohol (enol) that tautomerizes to a ketone. For propyne, the internal carbon already bears a methyl group (R = CH3), so the resulting methyl ketone is CH3-CO-CH3, acetone.

Hydration of terminal alkynes with HgSO4/H2SO4 follows Markovnikov addition of water, where the OH attaches to the more substituted carbon (the internal carbon attached to the R group) and hydrogen adds to the terminal carbon. This forms a vinyl alcohol (enol) that tautomerizes to a ketone. For propyne, the internal carbon already bears a methyl group (R = CH3), so the resulting methyl ketone is CH3-CO-CH3, acetone.

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