Model IV:  H+ - NH4+ - Na+ - SO42− - NO3 - Cl - H2O

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. Specify the problem in the input fields below.

Solution Temperature

Temperature (180 - 330 K):    (See inputs for details of restrictions on the temperature range, related to the chemical composition of the system.)

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.

Solid Phases

Check the boxes below to prevent the formation of selected solids, according to the restrictions that apply for this model. This enables the properties of metastable, supersaturated, aqueous aerosols to be investigated. The default for each calculation is that all solids can form.

No boxes should be checked for any systems containing both NH4+ and Cl ions.

Omit the following solids:

Ice H2SO4 · H2O H2SO4 · 2H2O
H2SO4 · 3H2O H2SO4 · 4H2O H2SO4 · 6.5H2O
HNO3 · H2O HNO3 · 2H2O HNO3 · 3H2O
HCl · 3H2O (NH4)2SO4 (NH4)3H(SO4)2
NH4HSO4 NH4NO3 2NH4NO3 · (NH4)2SO4
3NH4NO3 · (NH4)2SO4

To submit your calculation, click here: