Equilibrium temperature

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Presentation transcript:

Equilibrium temperature

Constrain the activity of species in the reaction. You can use Rxn to calculate the temperature at which a reaction is in equilibrium. Reaction for the dehydration of gypsum Constrain the activity of species in the reaction. Do not set temperature Run → Go calculates the equilibrium temperature

Return to the Basis pane to alter your system constraints In a dilute solution the water activity is close to 1 The dehydrated mineral is more stable above 43.7 °C, the equilibrium temperature. Return to the Basis pane to alter your system constraints

Lower the water activity to model equilibrium in a brine. Change your constraints to see how the equilibrium temperature is affected. Lower the water activity to model equilibrium in a brine.

Anhydrite is more stable over a larger temperature range in the brine.