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A general method of predicting the water activity of ternary aqueous solutions from binary data
Author(s) -
Chen H.,
Sangster J.,
Teng T. T.,
Lenzi F.
Publication year - 1973
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450510214
Subject(s) - ternary operation , electrolyte , thermodynamics , aqueous solution , binary number , chemistry , ternary numeral system , materials science , mathematics , physics , computer science , electrode , programming language , arithmetic
An isopiestic method has been developed to predict a w for ternary solutions from binary a w data. Another method, previously outlined by Robinson and Bower, has been extended to include non‐electrolytes. Both methods have been used to predict a w 's for 51 representative systems. The results show that the isopiestic method is as good as, or better than Robinson and Bower's in predicting a w for ternary aqueous electrolyte/ electrolyte, electrolyte/non‐electrolyte and non‐electrolyte/non‐dectrolyte systems. Calculated a w values are in good agreement (<0.5%> error on the average) with experiment. The methods are applicable to relatively concentrated solutions up to 12 m.