Question

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a) The rate constant for the oxidation of nitric oxide by ozone is 2x10 14 molecule cm2 sec. Write the reaction and set up the rate equation. The rate constant for a competing reaction in which nitric oxide is oxidized by O2 to form nitrogen dioxide is 2x 10-38 molecule2cm'sec. Write the reaction and set up the rate equation. c) For typical concentrations encountered in morning smog episodes, namely 40 ppb for ozone and 80 ppb for nitric oxide, deduce the rates of these two reactions and decide which one is the dominant process. Assume 1 atm and 25C d) This system illustrates a general principle. Using the result in part c, which oxidant tends to be more reactive in the atmosphere? b)

Answer 1

a) No 0 NO.1 Го 3 8 2 6 NO