caa a22 4500 477061192 CHVBK 20180405111401.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF00162406 doi (NATIONALLICENCE)springer-10.1007/BF00162406 Henry's law coefficients of formic and acetic acids [Elektronische Daten] [Bryan Johnson, Eric Betterton, David Craig] The Henry's law constants, K H, of dilute aqueous formic and acetic acids were determined experimentally as a function of concentration and temperature using a new counterflow packed-column technique. K H was found to be (8.9±1.3)×103 and (4.1±0.4)×103 M atm-1 at 25°C for HCOOH and CH3COOH, respectively. The reaction enthalpies, ΔH, were found to be −51±2 kJ mol-1 and −52±1 kJ mol-1 for formic and acetic acid, respectively. These are in good agreement with calculated thermochemical values. Whereas the K H values are in reasonably good agreement with certain other experimentally determined values, K H (HCOOH) is two to three times higher than calculated thermochemical values while K H (CH3COOH) is lower than the two calculated values. The ‘best' experimental values appear to be (11±2)×103 M atm-1 and (7±3)×103 M atm-1 for HCOOH and CH3COOH, respectively. Kluwer Academic Publishers, 1996 Henry's law nationallicence formic acid nationallicence acetic acid nationallicence carboxylic acids nationallicence Johnson Bryan Department of Atmospheric Sciences, University Station, 82071, WY, U.S.A. aut Betterton Eric Department of Atmospheric Sciences, University of Arizona, 85721, Tucson, AZ, U.S.A. aut Craig David Department of Atmospheric Sciences, University of Arizona, 85721, Tucson, AZ, U.S.A. aut Journal of Atmospheric Chemistry Kluwer Academic Publishers 24/2(1996-06-01), 113-119 0167-7764 24:2<113 1996 24 10874 https://doi.org/10.1007/BF00162406 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00162406 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnson Bryan Department of Atmospheric Sciences, University Station, 82071, WY, U.S.A aut NATIONALLICENCE 700 1- Betterton Eric Department of Atmospheric Sciences, University of Arizona, 85721, Tucson, AZ, U.S.A aut NATIONALLICENCE 700 1- Craig David Department of Atmospheric Sciences, University of Arizona, 85721, Tucson, AZ, U.S.A aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers 24/2(1996-06-01), 113-119 0167-7764 24:2<113 1996 24 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer