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Experimental determination of Henry's law constants of trifluoroacetic acid at 278–298K
AbstractEquilibrium partial pressures of trifluoroacetic acid () over aqueous trifluoroacetic acid test solutions were determined at 278.15, 288.15, and 298.15K. The concentration of undissociated trifluoroacetic acid () in each test solution was determined by means of attenuated total reflection IR spectroscopy and window factor analysis. From the linear relationship between and , the Henry's law constant of trifluoroacetic acid (KH) at 298.15K was determined to be 5800±700moldm−3atm−1 and KH at temperature T in K was determined to be KH=5780exp[−4120×(1/298.15−1/T)] in moldm−3atm−1. The KH value at 298.15K was 0.65 times the reported value [Bowden, D.J., Clegg, S.L., Brimblecombe, P., 1996. The Henry's law constant of trifluoroacetic acid and its partitioning into liquid water in the atmosphere. Chemosphere 32, 405–420] for pKa=0.47 and it was equal to that for pKa=0.2.
Experimental determination of Henry's law constants of trifluoroacetic acid at 278–298K
AbstractEquilibrium partial pressures of trifluoroacetic acid () over aqueous trifluoroacetic acid test solutions were determined at 278.15, 288.15, and 298.15K. The concentration of undissociated trifluoroacetic acid () in each test solution was determined by means of attenuated total reflection IR spectroscopy and window factor analysis. From the linear relationship between and , the Henry's law constant of trifluoroacetic acid (KH) at 298.15K was determined to be 5800±700moldm−3atm−1 and KH at temperature T in K was determined to be KH=5780exp[−4120×(1/298.15−1/T)] in moldm−3atm−1. The KH value at 298.15K was 0.65 times the reported value [Bowden, D.J., Clegg, S.L., Brimblecombe, P., 1996. The Henry's law constant of trifluoroacetic acid and its partitioning into liquid water in the atmosphere. Chemosphere 32, 405–420] for pKa=0.47 and it was equal to that for pKa=0.2.
Experimental determination of Henry's law constants of trifluoroacetic acid at 278–298K
Kutsuna, Shuzo (Autor:in) / Hori, Hisao (Autor:in)
Atmospheric Environment ; 42 ; 1399-1412
06.11.2007
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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