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Log ratio activity in Act2


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Hi GWB Forum,

Is there any option to draw activity diagram by using log activity ratio data in each axes? I tried to draw an activity diagram of Alumino Silicate minerals like an example in the attachment file, but i can't find the option for log activity ratio in the axes. Could you please help me out? Thanks.

Alumino Silicate.JPG

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Guest Melika Sharifi

Dear Mulyanto,

Thank you for your question. You can certainly set activity ratios for X and Y axes in the Basis pane in Act2 program. To do so, you'll need to swap an activity ratio into the basis. For your problem, for example, you need to select "K+" for the x-axis species  and "Na+" for the y-axis species, then click on the swap button next to each and select Ratio... . In the Species Activity Ratio box set H+ as the denominator with power 1.

For more information, please read Using Act2 section in the GWB Essentials Guide. All GWB Users Guides can be accessed from the Help menu of any GWB app.



Melika Sharifi

Aqueous Solutions LLC

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