Chemistry Carboxylic Acids DUHS 2022
PMDC Verified Question 48 of 94
Hexanoic acid is IUPAC name:
A
Adipic acid
B
Propionic acid
C
Formic acid
D
Caproic acid
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Caproic acid
Concept:

Many straight-chain carboxylic acids are better known by their historical common names, which are often derived from their natural sources.

Solution:

  • Hexanoic acid is a 6-carbon straight-chain monocarboxylic acid (\( \text{C}_5\text{H}_{11}\text{COOH} \)).


  • Its common name is caproic acid, derived from the Latin word caper (goat), as it is one of the fatty acids responsible for the distinct odor of goats and goat milk.


Why other options are incorrect:

Adipic acid is hexanedioic acid (a dicarboxylic acid). Propionic acid is the 3-carbon acid. Formic acid is the 1-carbon acid.

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