Question

The given structure of amino acid will exist at which pH?

• A. 7
• B. 14
• C. 2-3
• D. 12

Answer 1

The correct option is C 2-3

In the give structure of amino acid, the $COOH$ does not given its $H^{+}$ ion and the $N{H}_2$ group get protonated to $N{H}_3^{+}$ which means the pH of the solution is more acidic than $COOH$ and $N{H}_2$. Thus, from the given option the possible value for pH of the solution is 2-3 which is a strongly acidic medium.