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What is the correct IUPAC name for CH3-CH2-COOH?

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Question: What is the correct IUPAC name for CH3-CH2-COOH?

Options:

  1. Propanoic acid
  2. Butanoic acid
  3. Acetic acid
  4. Isobutyric acid

Correct Answer: Propanoic acid

Solution: 

The compound CH3-CH2-COOH has three carbons in the longest chain and a carboxylic acid functional group, making it propanoic acid.

What is the correct IUPAC name for CH3-CH2-COOH?

Practice Questions

Q1
What is the correct IUPAC name for CH3-CH2-COOH?
  1. Propanoic acid
  2. Butanoic acid
  3. Acetic acid
  4. Isobutyric acid

Questions & Step-by-Step Solutions

What is the correct IUPAC name for CH3-CH2-COOH?
  • Step 1: Identify the structure of the compound CH3-CH2-COOH. It consists of three carbon atoms in a chain.
  • Step 2: Recognize that the -COOH group at the end of the chain indicates that this compound is a carboxylic acid.
  • Step 3: Count the number of carbon atoms in the longest chain. There are three carbon atoms.
  • Step 4: Use the IUPAC naming rules for carboxylic acids. The name for a three-carbon carboxylic acid is 'propanoic acid'.
  • Step 5: Conclude that the correct IUPAC name for CH3-CH2-COOH is propanoic acid.
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