Which of the following is the correct IUPAC name for CH3-CH2-CH2-CHO?

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Question: Which of the following is the correct IUPAC name for CH3-CH2-CH2-CHO?

Options:

Correct Answer: Butanal

Solution:

The compound has four carbons and an aldehyde functional group, making it butanal.

Which of the following is the correct IUPAC name for CH3-CH2-CH2-CHO?

Which of the following is the correct IUPAC name for CH3-CH2-CH2-CHO?

Step 1: Identify the number of carbon atoms in the compound CH3-CH2-CH2-CHO. Count the carbon atoms: there are 4 (CH3, CH2, CH2, and CHO).
Step 2: Determine the functional group present in the compound. The -CHO group indicates that it is an aldehyde.
Step 3: Name the longest carbon chain that includes the aldehyde group. The longest chain with 4 carbons is called butane.
Step 4: Since the compound has an aldehyde functional group, the name changes from butane to butanal.
Step 5: Combine the information to conclude that the correct IUPAC name for CH3-CH2-CH2-CHO is butanal.

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