What is the IUPAC name for the compound with the formula C2H5-CHO?

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Question: What is the IUPAC name for the compound with the formula C2H5-CHO?

Options:

Correct Answer: Acetaldehyde

Solution:

The compound is an aldehyde with two carbons, which is named Acetaldehyde or Ethanal.

What is the IUPAC name for the compound with the formula C2H5-CHO?

What is the IUPAC name for the compound with the formula C2H5-CHO?

Step 1: Identify the formula given, which is C2H5-CHO.
Step 2: Recognize that the 'CHO' part indicates the presence of an aldehyde functional group.
Step 3: Count the number of carbon atoms in the compound. C2H5 has 2 carbon atoms.
Step 4: Since there are 2 carbon atoms in total, the compound is a 2-carbon aldehyde.
Step 5: The IUPAC naming convention for aldehydes is to use the suffix '-al'.
Step 6: The base name for a 2-carbon aldehyde is 'ethan-', so we combine it with '-al' to get 'ethanal'.
Step 7: The common name for ethanal is 'acetaldehyde'.
Step 8: Therefore, the IUPAC name for the compound C2H5-CHO is 'ethanal'.

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