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What is the IUPAC name of CH3CHO?

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Question: What is the IUPAC name of CH3CHO?

Options:

  1. Ethanal
  2. Propanal
  3. Acetaldehyde
  4. Butanal

Correct Answer: Ethanal

Solution: 

The IUPAC name of CH3CHO is ethanal, which is also known as acetaldehyde.

What is the IUPAC name of CH3CHO?

Practice Questions

Q1
What is the IUPAC name of CH3CHO?
  1. Ethanal
  2. Propanal
  3. Acetaldehyde
  4. Butanal

Questions & Step-by-Step Solutions

What is the IUPAC name of CH3CHO?
Correct Answer: ethanal
  • Step 1: Identify the molecular formula CH3CHO. This shows that the compound contains carbon (C), hydrogen (H), and oxygen (O).
  • Step 2: Count the number of carbon atoms in the formula. There are 2 carbon atoms.
  • Step 3: Determine the functional group present. The -CHO group indicates that this is an aldehyde.
  • Step 4: Use the number of carbon atoms to name the base alkane. With 2 carbon atoms, the base name is 'ethane'.
  • Step 5: Since the compound is an aldehyde, change the 'e' in 'ethane' to 'al' to form 'ethanal'.
  • Step 6: Recognize that ethanal is also commonly known as acetaldehyde.
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