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

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1-Pentene
2-Pentene
3-Pentene
Butene

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

Solution: The longest carbon chain containing the double bond has five carbons, and the double bond starts at the second carbon, making it 2-Pentene.

Steps: 6

Step 1: Identify the carbon chain in the molecule. Count the number of carbon atoms in the longest chain.
Step 2: In the given molecule CH3-CH=CH-CH2-CH3, there are 5 carbon atoms in a row.
Step 3: Determine if there are any double bonds in the chain. Here, there is a double bond between the second and third carbon atoms.
Step 4: Number the carbon atoms in the chain starting from the end closest to the double bond. This means the double bond starts at carbon 2.
Step 5: Use the IUPAC naming rules. Since there are 5 carbons in the chain, it is a 'pentene' because it has a double bond.
Step 6: Combine the position of the double bond with the name of the chain. The double bond starts at carbon 2, so the name is '2-Pentene'.

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

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