What is the correct IUPAC name for the following compound?
A) 3-ethylbutanoic acid
B) 2-ethylbutanoic acid
C) 2-pentanoic acid
D) 2-ethylpentanoic acid

Question

What is the correct IUPAC name for the following compound? 
A) 3-ethylbutanoic acid 
B) 2-ethylbutanoic acid 
C) 2-pentanoic acid 
D) 2-ethylpentanoic acid

Quizplus · Accepted Answer

The compound has a chain of four carbons with a methyl group and an ethyl group attached to the second carbon. Therefore, it is a butanoic acid with an ethyl group on the second carbon, making the correct IUPAC name 2-ethylbutanoic acid. The other options do not correctly describe the structure of the compound.

What Is the Correct IUPAC Name for the Following Compound