Question

What ketones would be formed from the acid-catalyzed addition of water to 3-heptyne?

Short answer

R-C≡C-R' + H₂O → R-CH₂-CO-R' + R-CO-CH₂-R'

As here unsymmetrical alkyne is there so two ketones will form:

Step-by-step solution

What is acid catalysed addition of water

Acid-catalyzed addition of water is also called as acid catalyzed hydration. In this reaction water added with an unsaturated substrate in presence of an acid. Here the acid acts as the catalyst. The common acid catalysts are sulphuric acid and phosphoric acid.

Final answer

As here unsymmetrical alkyne is there so two ketones will form:

Both the ketones formed with the oxygen attached with triple bonded carbon atom and H₂ attached with other triple bonded carbon atom.