The product formed in the reaction of ethyne with dilute H2SO4 and Hg2+ is
Correct answer: C. Ethanal
- A. Ethyl hydrogen sulfate
- B. Methoxymethane
- C. Ethanal
- D. Ethanol
Explanation
The correct product formed in the reaction of ethyne with dilute H2SO4 and Hg2+ is Ethanal. This is because the reaction of ethyne under these conditions forms vinyl alcohol, which is unstable and readily isomerizes into acetaldehyde. Alkynes in reaction with acidified Hg2+ generally give ketones, but ethyne specifically forms an aldehyde due to the presence of only two carbons. The other options, Ethyl hydrogen sulfate, Methoxymethane, and Ethanol, are incorrect as they do not align with the reaction conditions and the nature of ethyne.
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Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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