Karen Posted September 22, 2015 Share Posted September 22, 2015 Brian, I am interested in writing some custom rate laws into a script for dissolution of some minerals. I have an idea as to how to do this but I think I am possibly missing something critical. Below is a rate law for anorthite dissolution that is one of the simpler expressions I am interested in incorporating into a React model. It has the form: Rate = k+[((aH+3n/aAl3+n)Keq)/(1+Keq(aH+3n/aAl3+n))] where n = 1/3, Keq is a known constant, and k+ is the forward rate constant. "a" represents activities and the parameters with n in them are exponents on the various hydrogen ion and aluminum ion activities. I have attached a file with a better representation of the expression. Also, I have not included the surface area of the (1-Q/K) terms because those are obvious to me as to their implementation. Any suggestions you have would be greatly appreciated. Best wishes, Karen J. Anorthite Rate Law.pdf Quote Link to comment Share on other sites More sharing options...
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