Dissociation

Effective Henry's law constant for species that dissociate in water, accounting for the enhancement due to aqueous dissociation products. The effective constant H* exceeds the intrinsic H because dissolved dissociation products add to the total aqueous loading. Covers diprotic species (CO₂, SO₂) and monoprotic species (HNO₃, K₂=0). From Seinfeld & Pandis Chapter 7, Equations 7.24 (CO₂), 7.41 (SO₂), 7.61 (HNO₃).