Question

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The data in Table 13.13(a) were obtained in a study of the oxidation of trace levels of NO in the presence of a large excess of ozone at 298 K: NO(g) + Os(g)-NO (g)+ O2(g) (Note the NO concentration units in Table 13.13a. When the molar concentrations of reactants are very low, as in the case of many atmospheric pollutants, it is easier to express them in units of molecules/cm3) a. Verify that the reaction is pseudo first order and determine the pseudo-first-order rate constant k' b. If the ozone concentration is 100 times the NO concentration at t second-order rate constant k? Express this k in Ms1 TABLE 13.13(b) Concentration of NO and In[NO] as a Function of Time NO (As) (molecules/cm3) In[NO] Time 0.0 1.00 x 109 20.723 8.36 x 10 100.0 20.544 6.98 108 200.0 20.364 20.184 5.83 x 108 300.0 400.0 4.87 X 108 20.004 19.824 500.0 4.07 X 108 b. 18.915 1000.0 1.65 X 108 21

Answer 1

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