WIKTIONARY

carbonic acid

Noun

∙ a weak unstable acid, H₂CO₃, known only in solution, and as carbonate salts; it is present in carbonated drinks, and sparkling wine, but decomposes to form carbon dioxide and water

BABYLON ENGLISH
carbonic acid
weak unsteady and colorless acid that is existent only in solution and is produced by dissolving carbon dioxide in water

HENGLISH - ADVANCED VERSION
carbonic acid
carbonic acid
n : a weak acid known only in solution; formed when carbon dioxide combines with water
carbonic acid
(chem.), an acid h2co3, not existing separately, which, combined with positive or basic atoms or radicals, forms carbonates. in common language the term is very generally applied to a compound of carbon and oxygen, co2, more correctly called carbon dioxide. it is a colorless, heavy, irrespirable gas, extinguishing flame, and when breathed destroys life. it can be reduced to a liquid and solid form by intense pressure. it is produced in the fermentation of liquors, and by the combustion and decomposition of organic substances, or other substances containing carbon. it is formed in the explosion of fire damp in mines, and is hence called after damp; it is also know as choke damp, and mephitic air. water will absorb its own volume of it, and more than this under pressure, and in this state becomes the common soda water of the shops, and the carbonated water of natural springs. combined with lime it constitutes limestone, or common marble and chalk. plants imbibe it for their nutrition and growth, the carbon being retained and the oxygen given out...
see carbonic

WORDNET 2.0
carbonic acid
Noun
1. a weak acid known only in solution; formed when carbon dioxide combines with water
(hypernym) acid
(derivation) carbonate

ENGLISH WIKIPEDIA - THE FREE ENCYCLOPEDIA
Carbonic acid
Not to be confused with Carbolic acid, an antiquated name for phenol.Carbonic acid is also an archaic name for carbon dioxide.
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