Which of the following is the correct IUPAC name for C2H5-CO-CH3?
Practice Questions
Q1
Which of the following is the correct IUPAC name for C2H5-CO-CH3?
2-Pentanone
3-Pentanone
Butan-2-one
Butan-3-one
Questions & Step-by-Step Solutions
Which of the following is the correct IUPAC name for C2H5-CO-CH3?
Step 1: Identify the structure of the compound C2H5-CO-CH3. This means there is a carbon chain with two carbon atoms (C2H5) attached to a carbonyl group (CO) and another carbon atom (CH3).
Step 2: Count the total number of carbon atoms in the compound. There are 4 carbon atoms in total: 2 from C2H5, 1 from CO, and 1 from CH3.
Step 3: Determine the type of compound. Since there is a carbonyl group (C=O) between two carbon chains, this compound is a ketone.
Step 4: Number the carbon chain. Start numbering from the end closest to the carbonyl group. The carbonyl group is on the second carbon, so the numbering is: 1 (C2H5) - 2 (C=O) - 3 (CH3).
Step 5: Name the compound based on the number of carbon atoms and the position of the carbonyl group. With 4 carbons, the base name is 'butane', and since the carbonyl is on the second carbon, the name becomes 'butan-2-one'.
