Four Mechanisms Involving Nitrogen Pentoxide

Harold S. Johnston

doi:10.1021/ja01154a014

THE DECOMPOSITION OF NITROGEN PENTOXIDE IN THE PRESENCE OF FOREIGN GASES

Journal of the American Chemical Society ◽

10.1021/ja01404a014 ◽

1927 ◽

Vol 49 (5) ◽

pp. 1257-1269 ◽

Cited By ~ 7

Author(s):

Warren F. Busse ◽

Farrington Daniels

Keyword(s):

Nitrogen Pentoxide

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THE STABILITY OF NITROGEN PENTOXIDE AT 1000 ATMOSPHERES OF OXYGEN IN THE PRESENCE OF NITROGEN TETROXIDE

Journal of the American Chemical Society ◽

10.1021/ja01358a506 ◽

1931 ◽

Vol 53 (7) ◽

pp. 2801-2802 ◽

Cited By ~ 1

Author(s):

Louis. Lewon ◽

Henry. Eyring

Keyword(s):

Nitrogen Tetroxide ◽

Nitrogen Pentoxide ◽

The Stability

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A Study of the Kinetics of the Reaction between Nitrogen Pentoxide and Nitric Oxide1,2

Journal of the American Chemical Society ◽

10.1021/ja01199a048 ◽

1947 ◽

Vol 69 (7) ◽

pp. 1735-1741 ◽

Cited By ~ 19

Author(s):

J. Harold Smith ◽

Farrington Daniels

Keyword(s):

Nitrogen Pentoxide ◽

Kinetics Of

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The thermal decomposition of nitrogen pentoxide at low pressures

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character ◽

10.1098/rspa.1925.0142 ◽

1925 ◽

Vol 109 (751) ◽

pp. 526-540 ◽

Cited By ~ 5

Keyword(s):

Thermal Decomposition ◽

The Other ◽

Nitrogen Tetroxide ◽

Nitrogen Pentoxide ◽

Other Hand ◽

Rate Of Reaction ◽

Reaction Proceeds ◽

Products Of Reaction ◽

Glass Surfaces ◽

Low Pressures

Unimolecular reactions possess a unique interest in that, as Perrin (‘Ann. Physique,’ vol. 11, p. 5, 1919) first pointed out, for the occurrence of such, some type of interaction between radiation and matter must take place. Although such reactions appear to be extremely rare, many physical processes such as evaporation, ionisation in gases at high temperatures and radio-active decay, proceed at rates conforming to a unimolecular law; true chemical reactions which are definitely unimolecular and not pseudo-unimolecular in character are, on the other hand, stated by many ( e. g ., Lowry, ‘Trans. Farad. Soc.,’ vol. 17, p. 596 (1922) ) to be non-existent. In order to substantiate this statement, it is clearly necessary to prove the more complex character of any reaction which satisfies the usual criteria of unimolecular change. The thermal decomposition of gaseous nitrogen pentoxide apparently fulfils these conditions, for Daniels and Johnston (‘J. Am. C. S.,’ vol. 43, p. 53 (1921)) showed that the reaction proceeded according to a unimolecular law over wide ranges of variation of pressure, and Lueck ( ibid ., vol. 44, p. 757 (1922)) obtained practically identical unimolecular constants for the decomposition in solution in carbon tetrachloride and chloroform. On the other hand, Daniels, Wulf and Karrer ( ibid ., vol. 44, p. 2402 (1922) ) suspected the reaction to be autocatalytic, owing to the apparent retardation of the reaction velocity in the presence of ozone, but the experiments of one of us (Hirst, ‘J. C. S.,’ vol. 127, p. 657 (1925), and of White and Tolman (‘J. Am. C. S.’ vol. 47, p. 1,240 (1925)) proved this to be erroneous. In addition, it has been shown that the reaction proceeds uniformly according to the unimolecular law even in the presence of extensive glass surfaces, or of gases which may be either indifferent, such as argon and nitrogen, or the products of reaction, such as nitrogen tetroxide or dioxide or oxygen. The rate of reaction may be expressed in the form - d C/ dt = 4·98 × 10 13 e -24.700/RT . C. Attempts have been made to interpret the experimental results on the hypothesis that the reaction is in reality bimolecular, and only apparently unimolecular in character; but owing to the abnormally large value of the energy of activation, namely, 24,700 calories per gram. molecule, the number of molecules which could be activated per second by inelastic collision, calculated according to the kinetic theory, falls far short of the observed reaction rate, being, in fact, some 10 5 times smaller.

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N2O5 reactive uptake kinetics and chlorine activation on authentic biomass-burning aerosol

Environmental Science Processes & Impacts ◽

10.1039/c9em00330d ◽

2019 ◽

Vol 21 (10) ◽

pp. 1684-1698

Author(s):

Lexie A. Goldberger ◽

Lydia G. Jahl ◽

Joel A. Thornton ◽

Ryan C. Sullivan

Keyword(s):

Biomass Burning ◽

Uptake Kinetics ◽

Flow Tube ◽

Aerosol Flow ◽

Nitryl Chloride ◽

Nitrogen Pentoxide ◽

Tube Reactor ◽

Biomass Burning Aerosol ◽

Kinetics Of

The reactive uptake kinetics of nitrogen pentoxide (N2O5) to authentic biomass-burning aerosol and the production of nitryl chloride (ClNO2) was determined using an entrained aerosol flow tube reactor.

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