Question

Why i aqueous medium amino acids forms zwitter ions

Answer 1

In chemistry, a zwitterion (/ˈtsvɪtəˌraɪən/ TSVIT-ə-rye-ən; from German Zwitter [ˈtsvɪtɐ], meaning 'hermaphrodite'), formerly called adipolar ion, is a molecule with two or morefunctional groups, of which at least one has a positive and one has a negative electrical charge and the net charge of the entire molecule is zero. Because they contain at least one positive and one negative charge, zwitterions are also sometimes called inner salts.[1] The charges on the different functional groups balance each other out, and the molecule as a whole is electrically neutral. The pH where this happens is known as theisoelectric point.

Answer 2

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The particular property of the amino acids of ionizable NH2 and COOH groups. In solution of different Ph 's the structure of amino acids changes. In aqueous solutions carboxyl groups transfers a proton to NH2 group to + and - charges within the molecule. This type of series is called zwitter ionic form