0 a weak acid made of carbon dioxide dissolved in water --
1 a weak acid made of carbon dioxide (= a gas) mixed with water --
The compound is believed to be highly unstable, decomposing spontaneously into carbonic acid monohydrate.
Inside the cytoplasm of the parietal cell, the carbonic acid readily dissociates into hydrogen and bicarbonate ions.
The dissolved gas reacts with the water to form carbonic acid, and thus acidifies the ocean.
In the more specific enzymatic methods, the enzyme urease converts urea to ammonia and carbonic acid.
In humans, acetophenone is metabolized to benzoic acid, carbonic acid, and acetone.
In the air, rain combines with carbon dioxide to form a weak carbonic acid.
There you have apparatus that contains simply solid carbonic acid, and when you press the button out comes the stream of carbonic acid and combustion is impossible.
The nostrils and mouths of human beings are such that one does not die from carbonic acid gas.
