Acids are classified in different ways as follows:
Based on their sources:
1. Organic acids: Acids present in plants and animals (living things) are organic acids.
Example: HCOOH, CH3COOH
2. Inorganic acids: Acids prepared from rocks and minerals are inorganic acids or mineral acids.
Example: HCl, HNO3 , H2SO4
Based on their Basicity:
1. Monobasic Acid: Acid that contain only one replaceable hydrogen atom per molecule is called monobasic acid. It gives one hydrogen ion per molecule of the acid in solution.
Example: HCl, HNO3
2. Dibasic Acid: An acid which gives two hydrogen ions per molecule of the acid in solution.
Example: H3SO4 , H2CO3
3. Tribasic Acid: An acid which gives three hydrogen ions per molecule of the acid in solution.
Example: H3PO4