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Ionization constants for deuterium oxide in deuterium oxide-organic mixtures

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Abstract

A potentiometric method using a glass electrode has been applied to determination of ionization constants for deuterium oxide (D2O) in binary mixtures of D2O with dioxane, tetrahydrofuran, acetone, dimethylsulfoxide, CH3CH2OD, and CH3OD at 25°C. The results are compared with values of ionization constants for H2O obtained previously in the corresponding H2O-organic mixtures, and the isotope effect is shown to be small. Further calculations with the D2O results show that the first five solvents mentioned above are neither appreciably acidic nor basic in D2O solution, but that CH3OD shows slightly acidic behavior (pKa=16.0±0.3).

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Authors and Affiliations

  1. Department of Chemistry, Brigham Young University, Provo, Utah

    Richard E. George & Earl M. Woolley

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  1. Richard E. George
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  2. Earl M. Woolley
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George, R.E., Woolley, E.M. Ionization constants for deuterium oxide in deuterium oxide-organic mixtures. J Solution Chem 1, 279–289 (1972). https://doi.org/10.1007/BF00645107

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  • DOI: https://doi.org/10.1007/BF00645107

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