Propane Solubility in Aqueous Mineral Acids (0–100%): a Significant Difference in the Solvating Properties of H2SO4, HNO3 and H3PO4

Unexpectedly high differences in propane solubility in the systems HNO₃–H₂O (salting-in), H₃PO₄–H₂O (salting-out) and H₂SO₄–H₂O (salting-out at low H₂SO₄ concentrations and salting-in at high concentrations) have been revealed, and the data quantitatively interpreted within the framework of the previously suggested equation relating the excess amounts of solubility with the molar volume of a system; the general nature of these equations for systems of this type has been demonstrated.