Chemistry Carboxylic Acids UHS 2024
PMDC Verified Question 1 of 94
Common name of 2-Hydroxy propanoic acid is:
A
Tartaric acid
B
Phthalic acid
C
Lactic acid
D
Formic acid
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Lactic acid
Concept:

2-Hydroxypropanoic acid consists of a 3-carbon chain with a carboxylic acid group at C1 and a hydroxyl (\( -\text{OH} \)) group at C2.

Formula:

$$ \text{CH}_3\text{-CH(OH)-COOH} $$

Solution:

  • This specific structure is famously known as lactic acid, the primary acid found in sour milk and produced in muscles during anaerobic respiration.


Why other options are incorrect:

Tartaric acid is 2,3-dihydroxybutanedioic acid. Phthalic acid is an aromatic dicarboxylic acid. Formic acid is the simplest 1-carbon acid.

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