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  4. the acidic group in aqueous solution of glycine is

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Q. the acidic group in aqueous solution of glycine is

NTA AbhyasNTA Abhyas 2020Biomolecules

Solution:

In aqueous solution, the $\alpha $ -amino acids form mostly Zwitter ions.

$NH_{2}CH_{2}COOH\rightleftharpoons H_{3}N^{+}-CH_{2}-COO^{-}$

If a base is added, $H^{+}$ ion is furnished by $-\overset{+}{N}H_{3}$ . Hence, the acidic group is $-\overset{+}{N}H_{3}$ .