Christoph

Hi Brian, Hi Sheila, is the only way to show the coefficients for the temperature polynomial calculating the equilibrium constants to use the Rxn module and conduct a calculation? Kind regards, Christoph

Hi Brian, thanks for your kind help! Cheers, Christoph

​Dear forum, ​as I calculate anorthite dissolution using a custom rate law in Xt1 I wonder about the reference of the kilograms in the unit of the reaction rate (rxn rate) in the text output file of GWB, which is mol/kg sec. So my question is if the kilograms refer to one kilogram of water? Thanks for your help and kind regards, Christoph​

Hello, I have a problem with the custom equation for a kinetic reactant. I can not use a rate and the activation energy at the same time. When I klick on the box for the activatrion energy the rate constant disappers? Can you help me with this problem? Thanks a lot, Christoph

Hello to everybody, i am doing some modelling with Geochemist's Workbench, but now i am wondering about the right amount of calcite dissolved. The system consists of a solution with 2.2 mmol Ca+2 and HCO3- is swapped to calcite (amount of 1 mol available). The fugacity of CO2 is swapped in for H+ and the values is fixed to 50 bars. This solution reacts with 4 mol of Na+ and Cl- and the fugacity of CO2 is fixed. For this problem I used thermo.dat. The output-file shows in the category "Basis components" now a negative amount of Ca+2 and an amount of calcite, which is 1.14 mol, from which 0.14 moles are in solution. So is this values now the amount if calcite dissolved in the first step? In the third step the amount of calcite is 1.00220 and the amount in the solution 0.00334767. Why is this changing? Which amount is the correct amount of calcite dissolved in each step? I observed this phenomennon in various models. I attached the react file and the output file and I hope you can help me! Regards, Christoph thermo.txt NaCl_thermo.rea