Question

Which of the following is the correct IUPAC name for $ \text{CH}_3\text{CH}_2\text{OH} $?

• A. Ethanol
• B. Methanol
• C. Propanol
• D. Butanol

Hint:

Remember: Alcohols are named by identifying the longest carbon chain and adding the suffix "-ol" for the hydroxyl group.

Answer 1

The Correct Option is A

Step 1: Identify the functional group
The given molecule is \( \text{CH}_3\text{CH}_2\text{OH} \), which is a two-carbon chain (ethane) with a hydroxyl group (-OH) attached to one of the carbons. The presence of the hydroxyl group (-OH) indicates that this compound is an alcohol.
Step 2: Name the compound
The name of the compound is based on the number of carbon atoms in the chain and the functional group: - The parent chain has 2 carbon atoms, so the root name is "ethane". - The "-OH" group is an alcohol, so the suffix is "-ol". Thus, the IUPAC name of the compound is "ethanol".
Answer:
Therefore, the correct IUPAC name for \( \text{CH}_3\text{CH}_2\text{OH} \) is ethanol. So, the correct answer is option (1).