What is the IUPAC name of the compound CH3-CH2-CH2-CH=CH2?

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Question: What is the IUPAC name of the compound CH3-CH2-CH2-CH=CH2?

Options:

Correct Answer: 1-pentene

Solution:

The longest carbon chain contains 5 carbons with a double bond at the first carbon, making it 1-pentene.

What is the IUPAC name of the compound CH3-CH2-CH2-CH=CH2?

What is the IUPAC name of the compound CH3-CH2-CH2-CH=CH2?

Step 1: Identify the number of carbon atoms in the compound. The structure CH3-CH2-CH2-CH=CH2 has 5 carbon atoms.
Step 2: Determine the longest continuous chain of carbon atoms. In this case, the longest chain is 5 carbons long.
Step 3: Check for any double bonds in the chain. There is a double bond between the first and second carbon atoms.
Step 4: Number the carbon chain starting from the end closest to the double bond. This means the double bond is at carbon 1.
Step 5: Use the IUPAC naming rules. Since there are 5 carbons in the chain and a double bond at the first carbon, the name is 1-pentene.

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