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

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

Options:

Correct Answer: 2-chlorobutane

Solution:

The compound is a four-carbon chain with a chlorine substituent on the second carbon, making it 2-chlorobutane.

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

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

Step 1: Identify the longest carbon chain in the compound. The formula CH3-CH2-CH(Cl)-CH3 has four carbon atoms in a row.
Step 2: Count the number of carbon atoms in the chain. There are 4 carbon atoms, which means the base name is butane.
Step 3: Look for any substituents (groups attached to the main chain). There is a chlorine (Cl) attached to the second carbon.
Step 4: Number the carbon atoms in the chain starting from the end closest to the substituent. The carbon with the chlorine is the second carbon.
Step 5: Combine the substituent name and the base name. The chlorine is on the second carbon, so we write it as 2-chlorobutane.

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