JEE Main Chemistry question

[BITSAT 2007] In aqueous solution, amino acids mostly exist as

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

In aqueous solution, the acidic –COOH group of an amino acid transfers its proton intramolecularly to the basic –NH₂ group, giving the dipolar zwitterionic form with a protonated ammonium group () and a deprotonated carboxylate

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Question ID VK-150667