Sulfite(aq)
Formation Gibbs Energy
Estimated ΔfG'm -504.6 ± 5.8 [kJ/mol]    Enter custom concentration »
Estimated ΔfG'° -487.5 ± 5.8 [kJ/mol]
Estimated using Component Contribution (2013)
pH
Ionic strength [M]
General Properties
Formula H2O3S
Common names Sulfite; Sulfurous acid; C00094
Molar Mass 81.97 [Da]
Structure
Links KEGG »
Species Formation Energies
Phase Net charge #Hydrogens Δf [kJ/mol] ΔfG'° [kJ/mol] Reference
aqueous -2 0 -483.7 -486.1 Component Contribution (2013)
aqueous -1 1 -525.3 -485.4
aqueous 0 2 -535.0 -453.9
aqueous -2 0 -486.5 -488.9 Alberty (2006)
aqueous -1 1 -527.8 -487.8