What is the IUPAC name of CH3CHO? (2023) 2023

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Question: What is the IUPAC name of CH3CHO? (2023) 2023

Options:

Correct Answer: Ethanal

Exam Year: 2023

Solution:

The IUPAC name of CH3CHO is ethanal, which is the simplest aldehyde.

What is the IUPAC name of CH3CHO? (2023) 2023

What is the IUPAC name of CH3CHO? (2023) 2023

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. The presence of the -CHO group indicates that this compound is an aldehyde.
Step 4: Name the longest carbon chain. With 2 carbon atoms, the base name is 'ethane'.
Step 5: Change the suffix of 'ethane' to 'al' to indicate that it is an aldehyde. This gives us 'ethanal'.
Step 6: Conclude that the IUPAC name of CH3CHO is ethanal.

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