CO2 + H2O ⇌ H2CO3
Here's a breakdown:
* Carbon dioxide (CO2) is a gas found in the atmosphere.
* Water (H2O) is a liquid found in many forms on Earth.
* Carbonic acid (H2CO3) is a weak acid that forms when carbon dioxide dissolves in water. It is an unstable compound and readily decomposes back into carbon dioxide and water.
This reaction is important in several processes:
* Ocean acidification: Carbon dioxide from the atmosphere dissolves in seawater, forming carbonic acid. This process increases the acidity of the ocean, impacting marine life.
* Formation of caves: Carbonic acid in groundwater can dissolve limestone, creating caves and other karst features.
* Carbonation of beverages: When carbon dioxide is dissolved in water under pressure, it forms carbonic acid, which gives carbonated drinks their fizz.
While carbonic acid is the primary product, other reactions can occur depending on conditions. For example, in the presence of calcium, carbonic acid can form calcium carbonate (CaCO3), a major component of limestone and shells.
