Explain the amphoteric behaviour of amino acids.

Explanation

Amino acids possess amphoteric behaviour as it contains both acidic (carboxyl group ) and basic (amino group )groups due to which they behave like salts rather simple amines .In aqueous solution , they neturalise each amines .In aqueous solution ,thhey neutralise each other involving transfer of a proton from the carboxyl group to the amino group giving rise to a diplopar ion known as .Zwitter ino. .It is neutral but contains both positive and negative charges .