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GUJCET · Chemistry · Aldehydes, Ketones, and Carboxylic Acids
For which compound pKa is highest?
- A HCOOH
- B \(CH _3 CH _2 COOH\)
- C \(C _6 H _5 CH _2 COOH\)
- D \(ClCH _2 CH _2 COOH\)
Answer & Solution
Correct Answer
(B) \(CH _3 CH _2 COOH\)
Step-by-step Solution
Detailed explanation
\(CH _3 CH _2 COOH\) has the highest pKa due to the electron-donating (+I) effect of the ethyl group, which destabilizes the conjugate base.
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