Solubilities of CH3C(O)O2NO2 and HO2NO2 in water and liquid H2SO4 uri icon

abstract

  • 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 firstorder approximation, the results indicate that the Henry's law constants (in units of mol kg1 atm1) 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 = 298.15 K. The activity coefficients of PAN and HO2NO2 in aqueous H2SO4 are found to have a simple relationship with the molality of H2SO4.

published proceedings

  • GEOPHYSICAL RESEARCH LETTERS

author list (cited authors)

  • Leu, M. T., & Zhang, R. Y.

complete list of authors

  • Leu, MT||Zhang, RY