Bicarbonate

Bicarbonate
Names
	IUPAC name Hydrogencarbonate
	Systematic IUPAC name Hydroxidodioxidocarbonate(1−)
	Other names Hydrogen carbonate; Hydrocarbonate;
Identifiers
CAS Number	71-52-3 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	3903504
ChEBI	CHEBI:17544 ;
ChEMBL	ChEMBL363707 ;
ChemSpider	749 ;
Gmelin Reference	49249
KEGG	C00288 ;
PubChem CID	769;
UNII	HN1ZRA3Q20 ;
CompTox Dashboard (EPA)	DTXSID2049921 ;
	InChI InChI=1S/CH2O3/c2-1(3)4/h(H2,2,3,4)/p-1 Key: BVKZGUZCCUSVTD-UHFFFAOYSA-M ;
	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

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 H C O−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.

^ ^a ^b "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.

[hydrogencarbonate_(CHEBI:17544)-1] "hydrogencarbonate (CHEBI:17544)". Chemical Entities of Biological Interest (ChEBI). UK: European Institute of Bioinformatics. IUPAC Names. Archived from the original on 7 June 2015.

[2] Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005 (PDF), IUPAC, p. 137

[veq-3] "Clinical correlates of pH levels: bicarbonate as a buffer". Biology.arizona.edu. October 2006. Archived from the original on 31 May 2015.

[4] 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."

[5] "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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