Freezing temperatures of aqueous solutions of mixtures of amides and polyols. Gibbs energy of interaction of the amide group with the hydroxyl group in aqueous solution |
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| Authors: | Jan J Spitzer Sushil K Suri Robert H Wood |
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| Institution: | (1) Research Development, Latex Division, Polysar Ltd., N7T 7N2 Sarnia, Ontario;(2) Chemistry Department, Indian Institute of Technology, 110016 New Delhi, India;(3) Department of Chemistry, University of Delaware, 19716 Newark, DE |
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| Abstract: | Freezing temperatures of dilute aqueous mixtures of: formamide with myo-inositol, d-mannitol, and cyclohexanol; N,N-dimethylformamide with inositol, mannitol, and cyclohexanol; and acetamide with inositol and mannitol have been measured. These data have been analyzed to yield the pairwise molecular Gibbs energies of interaction between the molecules in an aqueous solution. Using the group additivity principle, the results yield the pairwise functional group Gibbs energies of interaction of the amide group with the hydroxyl group, G
OH,CONH
=–31 J-kg-mol–2. |
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| Keywords: | Freezing points aqueous solutions amides polyols group interactions formamide dimethylformamide acetamide inositol mannitol cyclohexanol |
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