Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1129l&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 8, p. 1129-1132
Physics
1
Atmospheric Composition And Structure, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Aerosols And Particles
Scientific paper
In this paper we analyze literature values of the Henry's law constants of peroxyacetyl nitrate (CH3C(O)O2NO2, PAN) and peroxynitric acid (HO2NO2) in water and liquid sulfuric acid, and derive correlative expressions to predict the solubilities of PAN and HO2NO2 in liquid H2SO4 over a wide range of temperature and acidic composition. To a first-order approximation, the results indicate that the Henry's law constants (in units of molkg-1atm-1) are ln(H)=1.07-mH2SO4×(0.69-152/T)-5810×(1/T0-1/T) for PAN and ln(H)=3.69-mH2SO4×(-0.25+65/T)-8400×(1/T0-1/T) for HO2NO2 where mH2SO4 is the molality of sulfuric acid, T is the temperature of solutions, and T0=298.15K. The activity coefficients of PAN and HO2NO2 in aqueous H2SO4 are found to have a simple relationship with the molality of H2SO4.
Leu Ming-Taun
Zhang Renyi
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