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Kinetics of the Rapid Gas Phase Reaction between NO, NO_2, and H_2O

Wayne, Lowell G. and Yost, Don M. (1951) Kinetics of the Rapid Gas Phase Reaction between NO, NO_2, and H_2O. Journal of Chemical Physics, 19 (1). pp. 41-47. ISSN 0021-9606.

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Using the absorption of light by nitrogen dioxide as a measure of its concentration, the rate of the gas phase reaction NO+NO_2+H_2O=2HNO_2 was measured over a fivefold range of water vapor and nitrogen dioxide concentrations, with nitric oxide greatly in excess. Changes in light intensity were detected by means of an electron‐multiplier photo‐tube and recorded by photographing the screen of a cathode‐ray oscilloscope. Half‐times as short as 0.014 sec were observed. The reaction rate was found to depend more strongly upon the concentration of water vapor than upon that of nitrogen dioxide and to be kinetically consistent with a mechanism involving termolecular collisions. The equilibrium constant of the reaction has been calculated and its order of magnitude experimentally confirmed, and a lower limit has been fixed for the rate of dissociation of nitrogen sesquioxide.

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Alternate Title:Kinetics of the Rapid Gas Phase Reaction between NO, NO2, and H2O
Additional Information:© 1951 American Institute of Physics. Received 18 September 1950. We wish to express our great appreciation for the many helpful discussions with Dr. Oliver Wulf. We are grateful to Dr. Norman Davidson for general criticism. The work was supported in part by a grant from the Research Corporation, for which we are very grateful.
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Official Citation:Kinetics of the Rapid Gas Phase Reaction between NO, NO2, and H2O Wayne, Lowell G. and Yost, Don M., The Journal of Chemical Physics, 19, 41-47 (1951), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48259
Deposited By: George Porter
Deposited On:08 Aug 2014 22:43
Last Modified:03 Oct 2019 07:01

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