For baking soda, see sodium bicarbonate. For the programming principle, see Tim Toady Bicarbonate.
Not to be confused with Dicarbonate.
"Hydrogen carbonate" redirects here. For the oxoacid, see carbonic acid.
"Hydrocarbonate" redirects here. For the gas, see water gas.
Bicarbonate
Names
IUPAC name
Hydrogencarbonate
Systematic IUPAC name
Hydroxidodioxidocarbonate(1−)[1]
Other names
Hydrogen carbonate[1]
Hydrocarbonate
Identifiers
CAS Number
71-52-3Y
3D model (JSmol)
Interactive image
3DMet
B00080
Beilstein Reference
3903504
ChEBI
CHEBI:17544Y
ChEMBL
ChEMBL363707Y
ChemSpider
749Y
Gmelin Reference
49249
KEGG
C00288Y
PubChem CID
769
UNII
HN1ZRA3Q20Y
CompTox Dashboard (EPA)
DTXSID2049921
InChI
InChI=1S/CH2O3/c2-1(3)4/h(H2,2,3,4)/p-1Y
Key: BVKZGUZCCUSVTD-UHFFFAOYSA-MY
SMILES
OC([O-])=O
Properties
Chemical formula
HCO− 3
Molar mass
61.0168 g mol−1
log P
−0.82
Acidity (pKa)
10.3
Basicity (pKb)
7.7
Conjugate acid
Carbonic acid
Conjugate base
Carbonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
In inorganic chemistry, bicarbonate (IUPAC-recommended nomenclature: hydrogencarbonate[2]) is an intermediate form in the deprotonation of carbonic acid. It is a polyatomic anion with the chemical formula HCO− 3.
Bicarbonate serves a crucial biochemical role in the physiological pH buffering system.[3]
The term "bicarbonate" was coined in 1814 by the English chemist William Hyde Wollaston.[4][5] The name lives on as a trivial name.
^ ab"hydrogencarbonate (CHEBI:17544)". Chemical Entities of Biological Interest (ChEBI). UK: European Institute of Bioinformatics. IUPAC Names. Archived from the original on 7 June 2015.
^Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005(PDF), IUPAC, p. 137
^"Clinical correlates of pH levels: bicarbonate as a buffer". Biology.arizona.edu. October 2006. Archived from the original on 31 May 2015.
^William Hyde Wollaston (1814) "A synoptic scale of chemical equivalents", Philosophical Transactions of the Royal Society, 104: 1-22. On page 11, Wollaston coins the term "bicarbonate": "The next question that occurs relates to the composition of this crystallized carbonate of potash, which I am induced to call bi-carbonate of potash, for the purpose of marking more decidedly the distinction between this salt and that which is commonly called a subcarbonate, and in order to refer at once to the double dose of carbonic acid contained in it."
^"Baking Soda". Newton – Ask a Scientist. Argonne National Laboratory. Archived from the original on 26 February 2015. Retrieved 2 May 2018.
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however, is transported back to the pulmonary capillaries of the lungs as bicarbonate (HCO3−) dissolved in the blood plasma. Myoglobin, a compound related...
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ion concentration, leading to increased bicarbonate, or alternatively a direct result of increased bicarbonate concentrations. The condition typically...
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