What is the IUPAC name of the compound with the formula CH3-CH2-CH(CH3)-CH2-CH3?

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Question: What is the IUPAC name of the compound with the formula CH3-CH2-CH(CH3)-CH2-CH3?

Options:

Correct Answer: 3-methylpentane

Solution:

The longest carbon chain has five carbons, and the methyl group is on the third carbon, making it 3-methylpentane.

What is the IUPAC name of the compound with the formula CH3-CH2-CH(CH3)-CH2-CH3?

What is the IUPAC name of the compound with the formula CH3-CH2-CH(CH3)-CH2-CH3?

Step 1: Identify the carbon chain in the compound. The formula CH3-CH2-CH(CH3)-CH2-CH3 shows a chain of carbon atoms.
Step 2: Count the number of carbon atoms in the longest chain. There are five carbon atoms in total.
Step 3: Name the longest chain. A five-carbon chain is called 'pentane'.
Step 4: Look for any branches in the carbon chain. There is a methyl group (CH3) attached to the third carbon.
Step 5: Combine the branch name with the longest chain name. Since the methyl group is on the third carbon, the name becomes '3-methylpentane'.

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