Name this molecule: C2H5OH

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Multiple Choice

Name this molecule: C2H5OH

Explanation:
The molecule is an alcohol, identified by the presence of a hydroxyl group (-OH). Its formula, C2H5OH, corresponds to two carbon atoms with one -OH attached, which fits the simplest two-carbon alcohol: ethanol (also called ethyl alcohol). In naming, the alcohol suffix -ol is used, and with two carbons the parent is ethane, so the name becomes ethanol. The other options don’t fit: ethanoic acid would have a carboxyl group and a different formula, ethene would have a carbon–carbon double bond, and ethane has no -OH group.

The molecule is an alcohol, identified by the presence of a hydroxyl group (-OH). Its formula, C2H5OH, corresponds to two carbon atoms with one -OH attached, which fits the simplest two-carbon alcohol: ethanol (also called ethyl alcohol). In naming, the alcohol suffix -ol is used, and with two carbons the parent is ethane, so the name becomes ethanol. The other options don’t fit: ethanoic acid would have a carboxyl group and a different formula, ethene would have a carbon–carbon double bond, and ethane has no -OH group.

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