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38029 
Journal Article 
Absolute determination of the temperature behavior of the NO2 + NO3 +(M) <-> N2O5 + (M) equilibrium 
Wangberg, I; Etzkorn, T; Barnes, I; Platt, U; Becker, KH 
1997 
Yes 
Journal of Physical Chemistry B
ISSN: 1520-6106
EISSN: 1520-5207 
101 
50 
9694-9698 
WOS:A1997YL46500018 
The temperature dependence of the NO2 + NO3 + (M) <-> N2O5 + (M) equilibrium has been studied in the temperature range 279.6-294.2 K at a total pressure of 1000 mbar synthetic air in the 200 m3 EUPHORE simulation chamber facility in Valencia, Spain. Simultaneous determination of the concentration-time behaviors of NO3, NO2, and N2O5 were obtained using the DOAS technique for detection of the NO3 radical and FT-IR spectroscopy for detection of NO2, and N2O5. The experimental data are well described by ln([N2O5]/[NO2][NO3]) = -60.46 ± 0.26 + (10724 ± 75)/T where the errors given are random and expressed as 95% confidence limits. A critical comparison is made between the values of Keq determined in this work and those reported in the literature.