Here's how it happens:
* CO₂ dissolves in water: Carbon dioxide is slightly soluble in water.
* Formation of carbonic acid: When CO₂ dissolves in water, it reacts with water molecules to form carbonic acid.
* CO₂ + H₂O ⇌ H₂CO₃
Carbonic acid is a weak acid, meaning it doesn't completely dissociate in water. However, it's still important because it contributes to:
* Ocean acidification: Carbon dioxide absorbed from the atmosphere makes ocean water more acidic.
* Weathering of rocks: Carbonic acid can dissolve certain minerals in rocks, contributing to their breakdown.
* Formation of caves: Carbonic acid can dissolve limestone, leading to the formation of caves.
So, while the reaction is not particularly dramatic, the formation of carbonic acid has significant implications for the environment.
