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Overview[edit] A carbonic anhydrase, or carbonate dehydratase, is a type of enzyme that rapidly catalyzes the conversion of carbon dioxide into a proton and the bicarbonate ion (HCO3-).
Carbonic Acid is simply water that has small amounts of carbon dioxide in it. It is a very weak acid. Carbon dioxide is CO2; water is H2O. When combined, the two form: CO2 + H2O = H2CO3 (aka Carbonic Acid.). Carbonic Acid gives a sharper tasting edge to drinks.