webmaster Posted November 8, 2004 Share Posted November 8, 2004 From: Charles F. Weber Subject: GWB questions Can anyone answer the following questions concerning the REACT program: 1) It appears that an inventory of 0 for Cl- produces an error. I am simply trying to calculate the solubilities of minerals in Cl free systems. Am I missing something? 2) The solubility of NaCl at 25 C is calculated to be > 9 molal. Did I do the calculation right? Is the discrepancy due to inadequacy of the activity coefficient model at higher ionic strengths? From: James Cleverley Subject: Re: GWB questions "1) It appears that an inventory of 0 for Cl- produces an error. I am simply trying to calculate the solubilities of minerals in Cl free systems. Am I missing something?" REACT is set to default charge balance on Cl- - if you do not want Cl- in the system choose another charge balance species: Balance on X where x is the species. Also you can not set a concentration to 0 - either leave it out or put the concentration to a negligible amount (1e-10?). "2) The solubility of NaCl at 25 C is calculated to be > 9 molal. Did I do the calculation right? Is the discrepancy due to inadequacy of the activity coefficient model at higher ionic strengths?" How did you calculate this??? Quote Link to comment Share on other sites More sharing options...
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