Potentiometric study of base strengths in the binary solvent, acetic anhydride-acetic acid

Kolling, Orland W.; Cooper, Wilton L.

doi:10.1021/ac60289a004

Anal. Chem.

1970

DOI: 10.1021/ac60289a004

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Potentiometric study of base strengths in the binary solvent, acetic anhydride-acetic acid

Orland W. Kolling¹,

Wilton L. Cooper²

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Cited by 10 publications

(1 citation statement)

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“…The glass-saturated calomel electrode pair has been used for several years as a practical cell for the measurement of the activity of the solvated proton in anhydrous and glacial acetic acid (1). In a series of investigations from our laboratory, this cell was applied to the evaluation of the apparent base strengths of proton acceptors in binary solvents containing acetic acid (2)(3)(4). The latter studies demonstrated that an observed positive shift in the cell emf conforms to the Feakins-French relationship for changes in the standard potential of the cell with decreasing mole fraction of HOAc in the mixed solvent.…”

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Method for determining the quantity (E0' + Ej) for a glass-calomel electrode pair in anhydrous acetic acid

Kolling¹

1976

Anal. Chem.

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A more precise method has been developed for evaluating the reference potential (E°' + Ej) for specific glass-calomel electrode pairs in anhydrous acetic acid as the solvent. The computed results are derived from measured potentials for the given electrode pair In MOAc solutions and from assumed values for the ion pair dissociation constants of the bases. The variation in the reference potential is less than ±3 mV upon substituting different glass electrodes having the same specifications from the manufacturer. An Indirectly calculated reference potential based on published data confirmed the order of magnitude of the experimental values.

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confidence: 99%

Method for determining the quantity (E0' + Ej) for a glass-calomel electrode pair in anhydrous acetic acid

Kolling¹

1976

Anal. Chem.

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ChemInform Abstract: POTENTIOMETRISCHE UNTERSUCHUNG VON BASENSTAERKEN IM BINAEREN LOESUNGSMITTEL ACETANHYDRID‐ESSIGSAEURE

Kolling¹,

Cooper²

1970

Chemischer Informationsdienst. Organische Chemie

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Characterization of Naphthenic Acids from Athabasca Oil Sands Using Electrospray Ionization: The Significant Influence of Solvents

Headley

Peru²,

Barrow³

et al. 2007

Anal. Chem.

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There is a need to develop routine and rugged methods for the characterization of oil sands naphthenic acids present in natural waters and contaminated soils. Mass spectra of naphthenic acids, obtained using a variant of electrospray ionization coupled with a Fourier transform ion cyclotron resonance mass spectrometer, are shown here to vary greatly, reflecting their dependence on solubilities of the acids in organic solvents. The solubilities of components in, for example, 1-octanol (similar solvent to fatty tissue) compared to polar solvents such as methanol or acetonitrile are used here as a surrogate to indicate the more bioavailable or toxic components of naphthenic acids in natural waters. Monocarboxylic compounds (CnH2n+zO2) in the z=-4, -6, and -12 (2-, 3-, and 6-ring naphthenic acids, respectively) family in the carbon number range of 13-19 were prevalent in all solvent systems. The surrogate method is intended to serve as a guide in the isolation of principle toxic components, which in turn supports efforts to remediate oil sands contaminated soils and groundwater.

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Potentiometric study of base strengths in the binary solvent, acetic anhydride-acetic acid

Cited by 10 publications

References 20 publications

Method for determining the quantity (E0' + Ej) for a glass-calomel electrode pair in anhydrous acetic acid

Method for determining the quantity (E0' + Ej) for a glass-calomel electrode pair in anhydrous acetic acid

ChemInform Abstract: POTENTIOMETRISCHE UNTERSUCHUNG VON BASENSTAERKEN IM BINAEREN LOESUNGSMITTEL ACETANHYDRID‐ESSIGSAEURE

Characterization of Naphthenic Acids from Athabasca Oil Sands Using Electrospray Ionization: The Significant Influence of Solvents

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