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The prediction of water activity of some supersaturated non‐electrolyte aqueous binary solutions from ternary data
Author(s) -
SEOW C. C.,
TENG T. T.
Publication year - 1981
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1981.tb01857.x
Subject(s) - supersaturation , ternary operation , binary number , aqueous solution , solubility , thermodynamics , binary data , chemistry , electrolyte , urea , materials science , mathematics , computer science , physics , organic chemistry , arithmetic , electrode , programming language
Summary Binary data are required for prediction of the water activities of multicomponent aqueous solutions by various methods. At high concentrations, these methods would need binary data beyond the solubility limits of individual solutes. Such supersaturated data are usually lacking or very difficult to determine experimentally. The Zdanovskii–Stokes–Robinson equation, which has been shown to be a reliable and accurate method for predicting the water activity of complex solutions, may be applied in reverse to calculate the water activities of supersaturated binary solutions from ternary data. Hitherto unpublished supersaturated binary a w data of mannitol, sucrose and urea obtained using this method as well as polynomials for their prediction are presented in this paper.