ISSN:
1572-8927
Keywords:
Activity coefficient
;
osmotic coefficient
;
seawater
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The equation of Reilly, Wood, and Robinson was used to predict the osmotic coefficient of seawater and of its concentrates at molal ionic strengths of 0.5 to 6.0 at 25°C. The results agree closely with experimental data at ionic strengths below 5. The average difference in osmotic coefficients over the entire concentration range is 0.0014. The only serious discrepancy is at an ionic strength of 6, where a difference of 0.0068 is found. The accuracy of the predictions of osmotic coefficients prompted the calculation of the activity coefficients of NaCl, Na2SO4, MgCl2, MgSO4, KCl, and K2SO4 in the mixture. The calculated activity coefficients of NaCl and Na2SO4 agree within experimental error with previous measurements. This agreement demonstrates the prediction of activity and osmotic coefficients for complex mixtures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00651724
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