What is the IUPAC name of ?
Answer and explanation
Correct answer: C. Propanone
- Step 1: Identify the longest carbon backbone: three carbons containing a non-terminal carbonyl group ().
- Step 2: A three-carbon chain corresponds to the parent alkane propane, and a ketone functional group is denoted by the characteristic suffix '-one'.
- Step 3: Numbering the chain locates the carbonyl group at carbon-2, giving the systematic IUPAC name propan-2-one, commonly termed propanone.
Answer
Propanone.
Why not the others: Propanol is a three-carbon alcohol containing a hydroxyl group; Propanal is a three-carbon aldehyde with a terminal carbonyl group (); Ethanone is chemically impossible as a stable ketone requires at least three carbons.
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