Carbonic Acid Formation in Water Bodies
When carbon dioxide (CO2) gas dissolves in water (H2O), a chemical reaction occurs, leading to the formation of carbonic acid (H2CO3).
Chemical Reaction:
The reversible reaction can be represented as: CO2 + H2O <=> H2CO3
This process is crucial in natural systems, including oceans, lakes, and rivers.
Acidic Nature:
Carbonic acid is a weak acid.
Upon dissolving in water, it dissociates partially to release hydrogen ions (H+) and bicarbonate ions (HCO3-), and further to carbonate ions (CO3^2-) and more H+ ions.
The increase in hydrogen ion concentration lowers the pH of the water, making it more acidic.
