Model II: Aqueous Solution Calculations

Aqueous Solution and Liquid Mixture Calculation

Here, the model determines the equilibrium state of a system containing liquid water, ions, ammonia, and/or organic compounds. Solids, and a second hydrophobic organic phase, can form but no partitioning of water or trace gases into the vapour phase is allowed to occur.

Inputs: the initial molalities of each ion present.
Outputs: aqueous molalities and mole fractions, mole fraction based activity coefficients, relative humidity, equilibrium gas partial pressures, and amounts of any solids present.
Main options: control of the formation of solid phases.

Specify the problem in the input fields below.

Solution Composition in Moles per kg of Water

H⁺:	NH₄⁺:	Na⁺:	NH₃ (ammonia):
SO₄²⁻:	NO₃⁻:	Cl⁻:

Show Options: Hide Options (and set to default values):

Other Chemical Components

The amounts of organic compounds present can be entered here. First, click the button to select compounds from the library or create new ones for this session.

(NH4)2SO4	(NH4)3H(SO4)2	NH4HSO4
NH4NO3	NH4Cl	2NH4NO3 · (NH4)2SO4
3NH4NO3 · (NH4)2SO4	NH4NO3 · NH4HSO4	Na2SO4
Na2SO4 · 10H2O	NaNO3	NaNO3 · Na2SO4 · H2O
NaCl	Na3H(SO4)2	NaHSO4 · H2O
NaHSO4	NaH3(SO4)2 · H2O	Na2SO4 · (NH4)2SO4 · 4H2O

Model III: H⁺ - NH₄⁺ - Na⁺ - SO₄²⁻ - NO₃⁻ - Cl⁻ - H₂O, at 298.15 K

Aqueous Solution and Liquid Mixture Calculation

Solution Temperature

Solution Composition in Moles per kg of Water

Other Chemical Components

Solid Phases

Model III: H+ - NH4+ - Na+ - SO42− - NO3− - Cl− - H2O, at 298.15 K

Aqueous Solution and Liquid Mixture Calculation

Solution Temperature

Solution Composition in Moles per kg of Water

Other Chemical Components

Solid Phases

Model III: H⁺ - NH₄⁺ - Na⁺ - SO₄²⁻ - NO₃⁻ - Cl⁻ - H₂O, at 298.15 K