Question

describe the ionic behavior of amino acid in acid and basic solution​

Answer 1

THE ACID-BASE BEHAVIOUR OF AMINO ACIDS

This page looks at what happens to amino acids as you change the pH by adding either acids or alkalis to their solutions.

For simplicity, the page only looks at amino acids which contain a single -NH2 group and a single -COOH group.

Amino acids as zwitterions

Zwitterions in simple amino acid solutions

An amino acid has both a basic amine group and an acidic carboxylic acid group.

There is an internal transfer of a hydrogen ion from the -COOH group to the -NH2 group to leave an ion with both a negative charge and a positive charge.

This is called a zwitterion.

This is the form that amino acids exist in even in the solid state. If you dissolve the amino acid in water, a simple solution also contains this ion.

A zwitterion is a compound with no overall electrical charge, but which contains separate parts which are positively and negatively charged.