Kinetics of the Fast Gas Phase Reaction between Ozone and Nitric Oxide

摘要

The rate of reaction between ozone and nitric oxide was followed optically at mdash;43 and mdash;75deg;. The reaction appears to be elementary bimolecularNOplus;O3equals;NO2plus;O2and the rate constant iskequals;0.8times;1012eminus;2500sol;RTthinsp;ccthinsp;moleminus;1secminus;1.The prehyphen;exponential factor for this reaction is compared with those of six other elementary gas phase reactions of the typeXplus;Yequals;Zplus;Wplus;middot;middot;middot;involving the oxides of nitrogen for which the energies of activation were higher. For this series of similar reactions the molecular complexity of the reactants is about constant (five or six atoms), and there appears to be no systematic difference in prehyphen;exponential factor between the fast and the slow reactions.