Hydrogen sulfide(aq)
Formation Gibbs Energy
Estimated ΔfG'm 34.4 ± 5.8 [kJ/mol]    Enter custom concentration »
Estimated ΔfG'° 51.5 ± 5.8 [kJ/mol]
Estimated using Component Contribution (2013)
pH
Ionic strength [M]
General Properties
Formula H2S
Common names Hydrogen sulfide; H2S; Hydrogen-sulfide; Sulfide; C00283
Molar Mass 33.99 [Da]
Structure
Links KEGG »
Species Formation Energies
Phase Net charge #Hydrogens Δf [kJ/mol] ΔfG'° [kJ/mol] Reference
aqueous -1 1 11.6 51.5 Component Contribution (2013)
aqueous -2 0 85.8 83.4 Alberty (2006)
aqueous -1 1 12.1 52.0
aqueous 0 2 -27.8 53.3