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JEE Main Chemistry question

ChemistryBiomoleculesJEE Main

In the amino acid with a second ammonium group at the far end (positions , the nearer , the farther ), the correct order of acidic character of , , is

Answer: (B)

Solution

() is the most acidic site: its conjugate base (carboxylate) is resonance-stabilised, so it loses most readily. Between the two ammonium groups, the one closer to the electron-withdrawing

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Question ID VK-150491