The chemical formula H2CO3 is known as carbonic acid.
Carbonic acid is a weak acid that forms when carbon dioxide (CO2) dissolves in water. It plays a crucial role in maintaining the pH balance in biological systems and is an important component in processes like respiration and photosynthesis. When carbonic acid is in solution, it can dissociate into bicarbonate (HCO3–) and hydrogen ions (H+), which are important in buffering systems within the body and in natural waters.