The rates of elementary processes in the chain reaction between hydrogen and oxygen III. Kinetics of the combination of hydrogen atoms with nitric oxide

A detailed study of the kinetics of the raction H + NO + M = HNO + M + 49.9 kcal/mole (1) shows that all the third bodies examined except H2O give similar relative efficiencies for the formation of ground state (1A') and electronically excited (1A") HNO. The overall rate constants found at 293°K (in cm6 mole-2 s-1 x 10-16) are: Ar, 1.11 ± 0.15; H2, 2.07 ± 0.18; CO2, 2.26 ± 0.23; N2O, 2⋅45 ± 0⋅44; SF6, 3.96 ± 0.46; H2O, 6.8 ± 1.2. For the reaction D + NO + Ar = DNO + Ar a rate constant of (1.28 ± 0.21) x 1016 cm6 mole-2 s-1 was obtained. The relative third body efficiencies in reaction (1) were less similar to the closely related Process H + O2 + M = HO2 + M + 47.1 kcal/mole than to the reaction O + NO + M = NO2 + M + 73.2 kcal/mole.