A salt is formed when the hydrogen ions in an acid are replaced wholly/fully or partially/partly ,directly or indirectly by a metal or ammonium radical.
The number of ionizable/replaceable hydrogen in an acid is called basicity of an acid. Some acids are therefore:
Monobasic acids generally denoted HX e.g. HCl, HNO3,HCOOH,CH3COOH.
Dibasic acids ; generally denoted H2X e.g. H2SO4, H2SO3, H2CO3,HOOCOOH.
Tribasic acids ; generally denoted H4X e.g. H3PO4.
Normal Salts and Acid Salts
A normal salt is formed when all the ionizable /replaceable hydrogen in an acid is replaced by a metal or metallic /ammonium radical.
An acid salt is formed when part/portion the ionizable /replaceable hydrogen in an acid is replaced by a metal or metallic /ammonium radical.
