HCO3-(aq)
Formation Gibbs Energy
Estimated ΔfG'm -563.9 ± 5.8 [kJ/mol]    Enter custom concentration »
Estimated ΔfG'° -546.8 ± 5.8 [kJ/mol]
Estimated using Component Contribution (2013)
pH
Ionic strength [M]
General Properties
Formula CH2O3
Common names HCO3-; H2CO3; Acid carbonate; Bicarbonate; Hydrogencarbonate; Carbonic acid; Carbonate; C01353
Molar Mass 60.99 [Da]
Structure
Links KEGG »
Note HCO3-(aq) is different from CO2(total), which includes the unhydrated form of CO2(aq). More info »
Species Formation Energies
Phase Net charge #Hydrogens Δf [kJ/mol] ΔfG'° [kJ/mol] Reference
aqueous -2 0 -527.8 -530.2 Component Contribution (2013)
aqueous -1 1 -586.7 -546.8
aqueous 0 2 -606.3 -525.2