In aqueous solution, amino acids mostly exit as

Question

In aqueous solution, amino acids mostly exit as (A) NH2-CHR-COOH  (B) NH 2- CHR - COCT (C)  overset+ NH 3 CHRCOOH  (D) H 3 overset+NCHRCOO -

Tardigrade Admin · Accepted Answer

In aqueous solutions, amino acids mostly exist as

H_{3} N + - C H RCO O^{-}

(zwitter ion).
In aqueous solution, amino acids exist in two forms. A very small fraction of amino acid molecules will be neutral, with a deprotonated amino groum and a protonated carboxylic acid group. However, the overwhelming majority of molecules will be in a zwitterion tautomer, with a positive charge on the protonated amino group and a negative charge on the deprotonated carboxylate group.

Q. In aqueous solution, amino acids mostly exit as

$N H_{2} - C H R - COO H$

$N H_{2} - C H R - COCT$

$N + H_{3} C H RCOO H$

$H_{3} N + C H RCO O^{-}$

Q. In aqueous solution, amino acids mostly exit as

NH2​−CHR−COOH

NH2​−CHR−COCT

N+H3​CHRCOOH

H3​N+CHRCOO−

$N H_{2} - C H R - COO H$

$N H_{2} - C H R - COCT$

$N + H_{3} C H RCOO H$

$H_{3} N + C H RCO O^{-}$