Carbonic acid

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A weak acid formed when Carbon dioxide dissolves in Water. Carbonic acid also forms when any organic or inorganic carbonate is dissolved in water. Carbon dioxide in equilibrium with water will produce carbonic acid; the resultant water has a pH of about 6.

Synonyms and Related Terms

aerial acid; acid of chalk; cretaceous acid; calcareous acid; acid of charcoal; mephitic acid; potash water; soda water; aerated water; kyselina uhlièitá (Ces.); kulsyre (Dan.); Kohlensäure (Deut.); ácido carbónico (Esp.); acide carbonique (Fr.); acido carbonico (It.); koolzuur (Ned.); karbonsyre (Nor.); kwas wêglowy (Pol.); ácido carbônico (Port.); kolsyra (Sven.)

Physical and Chemical Properties

Composition H2CO3
CAS 463-79-6
Density 1.0 g/ml
Molecular Weight 62.03

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 836
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998