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Microsoft Word - Exam #2 - Morris.docx
The produce from your farm is disinfected in ozonated, rather than chlorinated, water. The gas phase decomposition of ozone into molecular oxygen (2 O3 ? 3 O2) has been proposed to follow this mechanism:
O3 +O2 ?O2 +O+O2 O3 +O?2O2
You have found that when the O2 concentration is held constant, the half-life of O3 can be independent on [O3]0 or dependent on [O3]0 as [O3]0 varies.
a) (15 pts) Show how the mechanism could agree with experiment
The mechanism of the reaction has been shown to be
The rate limiting step is the first equation as it is equilibrium controlled
When O2 is held constant the only variable in this reaction is O3....
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