Thermochemical Investigations of Nearly Ideal Binary Solvents VII

Alternative Title

Monomer and dimer models for solubility of benzoic acid in simple binary and ternary solvents

Abstract

Solubilities are reported for benzoic acid at 25.0d̀ in binary mixtures of carbon tetrachloride with cyclohexane, n-hexane, or n-heptane and of cyclohexane with n-hexane or n-heptane and in ternary mixtures of carbon tetrachloride-cyclohexane-n-hexane and carbon tetrachloride-cyclohexane-n-heptane. Solubilities also are reported for benzoic acid in some binary solvents at 30.0d̀ and for m-toluic acid in binary mixtures of cyclohexane and n-hexane at 25.0° the results are compared to the predictions of equations developed previously for solubility in systems of purely nonspecific interactions, with the benzoic acids considered as either monomeric or dimeric molecules in solution. the dimer model gave more accurate predictions, with a maximum deviation of 4.4% between observed and predicted solubilities in all systems studied. Solubility maxima were predicted and observed for benzoic and m-toluic acids in cyclohexane-n-hexane and for benzoic acid in cyclohexane-n-heptane. the application of these solubility relationships to liquid-liquid partition coefficients is discussed.

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0022-3549

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1981 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 1981

Link to Full Text

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