Correct Answer: Option D

Explanation

Ethanol (C\(_2\)H\(_5\)OH) can be prepared in the laboratory by the hydration of ethene (C\(_2\)H\(_4\)). This process involves an acid-catalyzed addition reaction where water (in the form of steam) is added across the double bond of ethene in the presence of a concentrated acid catalyst, such as phosphoric(V) acid (H\(_3\)PO\(_4\)) or sulphuric acid (H\(_2\)SO\(_4\)).

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