Question:
The IUPAC name of CH₃–CH₂–CHO is: ____.
The IUPAC name of CH₃–CH₂–CHO is: ____.
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Always count the carbon atom that is part of the functional group (the C in –CHO) as Carbon-1. If you forget to count that one, you'll end up with the wrong name!
Updated On: May 16, 2026
- Propanal
- Propanone
- Propanoic acid
- Ethanal
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
IUPAC nomenclature follows a set of rules based on the longest carbon chain, the functional groups present, and their positions.
Step 2: Detailed Explanation:
1. Identify the functional group: The group –CHO indicates an aldehyde. The suffix for aldehydes is -al. 2. Count the carbons: The chain CH\(_3\)–CH\(_2\)–CHO has 3 carbons. 3. Determine the root name: A 3-carbon alkane is "propane." 4. Combine: Replace the '-e' from propane with '-al'. \[ \text{Propane} - \text{e} + \text{al} = \text{Propanal} \]
Step 3: Final Answer:
The IUPAC name is Propanal.
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