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The equilibrium constant for N2O5 = NO2 + NO3 - Absolute determination by direct measurement from 243 to 397 K

The equilibrium constant for N2O5 = NO2 + NO3 - Absolute determination by direct measurement from 243 to 397 K

Authors :
Cantrell, C. A
Davidson, J. A
Mcdaniel, A. H
Shetter, R. E
Calvert, J. G
Source :
Journal of Chemical Physics. 88
Publication Year :
1988
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1988.

Abstract

Direct determinations of the equilibrium constant for the reaction N2O5 = NO2 + NO3 were carried out by measuring NO2, NO3, and N2O5 using long-path visible and infrared absorption spectroscopy as a function of temperature from 243 to 397 K. The first-order decay rate constant of N2O5 was experimentally measured as a function of temperature. These results are in turn used to derive a value for the rate coefficient for the NO-forming channel in the reaction of NO3 with NO2. The implications of the results for atmospheric chemistry, the thermodynamics of NO3, and for laboratory kinetics studies are discussed.

Subjects

Subjects :
Atomic And Molecular Physics

Details

Language :
English
ISSN :
00219606
Volume :
88
Database :
NASA Technical Reports
Journal :
Journal of Chemical Physics
Notes :
NASA ORDER W-16042
Publication Type :
Report
Accession number :
edsnas.19880047730
Document Type :
Report
Full Text :
https://doi.org/10.1063/1.454679