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Which of the following is the correct IUPAC name for CH3-CH(CH3)-CH2-CH3?
Which of the following is the correct IUPAC name for CH3-CH(CH3)-CH2-CH3?
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Practice Questions
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Q1
Which of the following is the correct IUPAC name for CH3-CH(CH3)-CH2-CH3?
2-methylbutane
3-methylbutane
2-pentene
3-pentene
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The longest chain has 4 carbons with a methyl group on the second carbon, making it 2-methylbutane.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following is the correct IUPAC name for CH3-CH(CH3)-CH2-CH3?
Solution:
The longest chain has 4 carbons with a methyl group on the second carbon, making it 2-methylbutane.
Steps: 6
Show Steps
Step 1: Identify the longest continuous chain of carbon atoms in the molecule CH3-CH(CH3)-CH2-CH3.
Step 2: Count the number of carbon atoms in the longest chain. In this case, there are 4 carbon atoms.
Step 3: Number the carbon atoms in the chain starting from the end closest to a substituent (branch).
Step 4: Identify any substituents (branches) attached to the main chain. Here, there is a methyl group (CH3) attached to the second carbon.
Step 5: Combine the position of the substituent with the name of the longest chain. The longest chain is called 'butane' because it has 4 carbons.
Step 6: Since there is a methyl group on the second carbon, the full name becomes '2-methylbutane'.
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