HydrothermalDude Posted September 2, 2009 Share Posted September 2, 2009 Hello GWB, I am currently trying to run a kinetic model in GWB that emulates talc dissolution. I have a rate equation that does not require a rate constant but an activation energy. This particular rate law is not represented by GWB so I had to create a "Custom Rate Law"...I put in all the script into the command screen and it successfully transfered the information to the talc(kinetic mineral) on the react screen. I give the system initially 6 grams of talc to dissolve according to the rate law...unfortunately, GWB continues asking me for a rate constant which is not required. Could someone provide me some help/solution to this problem. Thanks, Drew Syverson Here is the rate law: kinetic Talc rate_law='surface*(5.0e-9*(activity(''H+'')^2/activity(''Mg2+''))^(1/4)+0.8e-9)*exp(-act_en/(8.314*TK))', surface=9000 The act_en = 45000 J/mol, TK = 298.15 K Attached is the GWB react system. Talc(Kinetic).rea Quote Link to comment Share on other sites More sharing options...
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