What is the IUPAC name of CH3-CH2-CH2-COOH?

Practice Questions

Q1
What is the IUPAC name of CH3-CH2-CH2-COOH?
  1. Butanoic acid
  2. Propanoic acid
  3. Pentanoic acid
  4. Hexanoic acid

Questions & Step-by-Step Solutions

What is the IUPAC name of CH3-CH2-CH2-COOH?
Correct Answer: Butanoic acid
  • Step 1: Identify the structure of the molecule. The formula CH3-CH2-CH2-COOH shows a chain of carbon atoms.
  • Step 2: Count the number of carbon atoms in the longest chain. There are 4 carbon atoms: CH3 (1) + CH2 (2) + CH2 (3) + COOH (4).
  • Step 3: Determine the functional group. The -COOH part indicates that this molecule is a carboxylic acid.
  • Step 4: Name the longest carbon chain. A chain with 4 carbon atoms is called 'butane'.
  • Step 5: Since it is a carboxylic acid, change 'butane' to 'butanoic acid'.
  • Step 6: Combine the information to conclude that the IUPAC name is Butanoic acid.
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