Abstract
AbstractThe rate constants for reactions (4) and (5)equation imagewere determined at room temperature by pulsed laser photolysis and time resolved mass spectrometry. A description of the experimental setup is given. CFCl2O2radicals were generated by photolysis of CFCl3at 193 nm in the presence of an excess of oxygen, using an excimer laser. The rate constant for reaction (4), determined under different experimental conditions is:The rate constant of reaction (5) was determined in the pressure range of 1–12 torr, using oxygen as the buffer gas. The reaction is in its fall‐off region and the parameters determined by using the semiempirical method of Troe, takingFc= 0.6 are:The value ofk(∞) is obtained from the low‐pressure measurements and therefore the uncertainty on the actual high‐pressure limit is higher than the error limits quoted above. The results are compared with those reported for similar reactions.
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