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Acidity constant of formic acid
Transactions of the Faraday Society, 1966The acidity constant of formic acid has been re-determined by precise e.m.f. measurements on cells without liquid junctions containing formic acid-sodium formate buffer solutions. The pKa is 3.739±0.001 at 25°C. This result agrees exactly with Saxton and Darken's value obtained by conductivity measurements but not with Harned and Embree's value ...
J. E. Prue, A. J. Read
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Dissociation constants of organophosphinic acid compounds
Talanta, 1993The dissociation equilibria of di(2,4,4-trimethylpentyi) phosphinic acid, mono(2,4,4-trimethylpentyl) phosphinic acid, di(n-octyl)phosphinic acid and mono(n-octyl)phosphinic acid have been studied in ethanol-water mixtures by potentiometric titration at 25 degrees C.
M, Martinez +3 more
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Acidity constant of hydrofluoric acid
Journal of Solution Chemistry, 1984A detailed experimental investigation of the association (acidity) constant of hydrofluoric acid has been made at 25°C in sodium perchlorate media at ionic strengths between 0.01 and 0.5M. Results were obtained by potentiometry using a fluoride ion-selective electrode in conjunction with three types of reference electrode, all involving cells with ...
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Determination of Acidity Constants of Perfluoroalkanoic Acids
Bulletin of the Chemical Society of Japan, 2001Abstract Acidity constants (Ka) of perfluoroalkanoic acids were determined by pH titration and by electric conductivity for shorter alkanoic acids (C1 to C5) with 1 to 5 carbon atoms in the alkyl chain. The acidity constants obtained by the two methods are in good agreement. They increase from C1 (ethanoic) to C3 (butanoic acid) and then
Yoshikiyo Moroi +3 more
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Dissociation constants of perfluoroalkanoic acids
Monatshefte für Chemie - Chemical Monthly, 2017The dissociation constants of six selected perfluoroalkanoic acids (from perfluoropentanoic to perfluorodecanoic acid) were determined using neutralization potentiometric titration method. The values of determined dissociation constants ranges from pK a = 2.17 to 2.44, and they are in partial agreement with published data ...
Radomír Čabala +2 more
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Dissociation constants of some organic acids
Talanta, 1984Dissociation constants of di(nonylphenyl)dithiophosphoric acid, di(nonylphenyl)phosphoric acid and 9-phenyltetracosansulphuric acid, determined by two methods, are reported.
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Dissociation constants of hydropseudohalic acids
Journal of Inorganic and Nuclear Chemistry, 1966Abstract By means of potentiometric titration with hydrochloric acid of solutions of pseudohalide salts at several ionic strengths and temperatures, p Q a and K a o values have been obtained for HCN, HN 3 , HOCN and HSCN. From pH studies HSeCN is shown to be a very stong acid.
J.H. Boughton, R.N. Keller
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Potential constants of nitric acid
Spectrochimica Acta Part A: Molecular Spectroscopy, 1968Valence force constants for nitric acid evaluated from fundamental mode vibration spectra by matrix ...
Ann Palm +2 more
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Potential Constants of Nitrous Acid
The Journal of Chemical Physics, 1957A normal coordinate treatment was carried out using a general quadratic potential function. Possible sets of force constants were evaluated on the basis of previously observed vibrational bands. The most probable range for the potential constants was established by means of bond order criteria and distributions of potential and kinetic energies among ...
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