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what does basis swap means?


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Guest Melika Sharifi

Dear Maithili,

 

Each thermo dataset in the GWB has a set of basis species, redox species, aqueous species, minerals, oxides, and gases. In any GWB app, only basis species of the loaded thermo dataset are available to add to the basis pane using "Add". However, when the modeler knows, for example, a mineral is in equilibrium with the system or a gas is at a known fugacity in the system, the mineral or gas should be swapped into the basis for one of basis species. By swapping a species (minerals, gases, redox species, aqueous species, or e-) into the basis for a basis species, you are defining chemical constraints for your system. The swapped species must contain in its composition the original basis species being swapped out (you can’t swap lead for gold). For more information, please see sections 2.1, 2.2, and 2.3 in the GWB Essentials Guide that can be accessed from Docs pane of the GWB Dashboard.

 

Bests,

Melika Sharifi

Aqueous Solutions LLC

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