Question:
What is IUPAC name of \(\text{CH}_{3}\text{CHO}\)?
What is IUPAC name of \(\text{CH}_{3}\text{CHO}\)?
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Replace the final e of the alkane name with al for an aldehyde.
Updated On: Nov 12, 2026
- Acetaldehyde
- Methylaldehyde
- Ethanol
- Ethanal
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
In IUPAC naming, aldehydes take the suffix -al, formed by replacing the final e of the parent alkane.
Step 2: Count the Carbons
\(\text{CH}_{3}\text{CHO}\) has 2 carbons including the carbonyl carbon, so the parent alkane is ethane.
Step 3: Name
Ethane becomes ethanal.
Acetaldehyde is the common name, so option (D) is the IUPAC name.
Final Answer:
The IUPAC name is ethanal. \[ \boxed{\text{(D) }\text{Ethanal}} \]
In IUPAC naming, aldehydes take the suffix -al, formed by replacing the final e of the parent alkane.
Step 2: Count the Carbons
\(\text{CH}_{3}\text{CHO}\) has 2 carbons including the carbonyl carbon, so the parent alkane is ethane.
Step 3: Name
Ethane becomes ethanal.
Acetaldehyde is the common name, so option (D) is the IUPAC name.
Final Answer:
The IUPAC name is ethanal. \[ \boxed{\text{(D) }\text{Ethanal}} \]
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