What is the IUPAC name for the compound with the formula C5H11-COOH?

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Question: What is the IUPAC name for the compound with the formula C5H11-COOH?

Options:

Correct Answer: Pentanoic acid

Solution:

The longest carbon chain contains five carbons, and the functional group is a carboxylic acid, hence the name is Pentanoic acid.

What is the IUPAC name for the compound with the formula C5H11-COOH?

What is the IUPAC name for the compound with the formula C5H11-COOH?

Step 1: Identify the formula given, which is C5H11-COOH.
Step 2: Recognize that COOH is the functional group for carboxylic acids.
Step 3: Count the number of carbon atoms in the longest chain. C5H11 indicates there are 5 carbon atoms.
Step 4: Since there are 5 carbon atoms, the base name of the compound is 'pentane'.
Step 5: Because the compound has a carboxylic acid functional group (COOH), we change 'pentane' to 'pentanoic acid'.
Step 6: Conclude that the IUPAC name for the compound is 'Pentanoic acid'.

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