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Chemistry · PYQ NEET UG 2025
हिन्दीThe correct order of decreasing acidity of the following aliphatic acids is : (1) \((\text{CH}_3)_3\text{CCOOH} > (\text{CH}_3)_2\text{CHCOOH} > \text{CH}_3\text{COOH} > \text{HCOOH} (2) \text{CH}_3\text{COOH} > (\text{CH}_3)_2\text{CHCOOH} > (\text{CH}_3)_3\text{CCOOH} > \text{HCOOH} (3) \text{HCOOH} > \text{CH}_3\text{COOH} > (\text{CH}_3)_2\text{CHCOOH} > (\text{CH}_3)_3\text{CCOOH} (4) \text{HCOOH} > (\text{CH}_3)_3\text{CCOOH} > (\text{CH}_3)_2\text{CHCOOH} > \text{CH}_3\text{COOH}\)
Correct answer · Option 3
(3)
Explanation
+I effect of alkyl groups decreases acidity. Formic acid has no +I group so it is most acidic, followed by acetic acid, then 2-methylpropanoic acid, and trimethylacetic acid is least acidic.
