Reaction of hot hydrogen atoms with COS
Hydrogen atoms of energy 104 kJ mol–1 and 68 kJ mol–1 produced by photolysis of HI react with COS to give CO and SH (1). The net probability of reaction (1) for atoms of initial energy H*+ COS → CO + SH (1) 104 kJ mol–1 is 0.62. Added CO2, He, Ar, Kr and Xe reduce the probability of (1) by removing energy in moderating collisions. Relative values of the energy-loss parameter α for collisions between H* and the rare gases agree qualitatively with those calculated assuming rigid sphere collisions. The maximum cross-section for reaction (1) is shown to be much smaller than the collision cross-section.