Question

A strongly alkaline solution of a monoaminodicarboxylic acid contains how many basic groups ?

Answer 1

Answer: 3

In strongly alkaline solution of an amino acid, all of its $—COOH$ groups are converted into $—CO{O}^{-}$ . Thus a strongly alkaline solution of a monoaminodicarboxylic acid will have one $—N{H}_2$ and two $—CO{O}^{-}$ groups, all of which are basic in nature. Further, $—N{H}_2$ is more basic than a $-CO{O}^{-}$ group.