Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Dissolved Inorganic Carbon Equilibrium

  • Henderson James (Jim) CleavesII
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_448-3


The dissolved inorganic carbon equilibrium is the equilibrium between CO 2 (g), HCO 3 (aq), H 2CO 3 (aq), and CO 3 −2 (aq) when CO 2 is dissolved in water. The equilibrium is dependent on the pressure of the gas, the overlying headspace and gas partial pressure, the solution temperature, the pH of the solution, and the concentration of various solutes such as electrolytes. It is significant because dissolved carbonate species may have a significant impact on the pH of natural waters:
$$ {\mathrm{CO}}_2\left(\mathrm{g}\right)\leftrightarrow {\mathrm{CO}}_2\left(\mathrm{a}\mathrm{q}\right) $$


Partial Pressure Bioorganic Chemistry Natural Water Inorganic Carbon Solution Temperature 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Earth-Life Science Institute (ELSI)Tokyo Institute of TechnologyMeguro-kuJapan
  2. 2.Institute for Advanced StudyPrincetonUSA
  3. 3.Blue Marble Space Institute of ScienceWashingtonUSA
  4. 4.Center for Chemical EvolutionGeorgia Institute of TechnologyAtlantaUSA