I with time ll are first-order, sketch on same graph the variations of [AL. (B),

Question

I with time ll are first-order, sketch on same graph the variations of [AL. (B), and IC 13.100 Hydrogen and iodine monochloride react as follows The rate law for the reaction is rate kH IICI) Suggest a possible mechanism for the reaction. ozone as 13.101 The rate law for the following reaction CO(g) + NO,(g)CO,(8) + NO(g) is rate KINO,1. Suggest a plausible mechanism for the reaction, given that the unstable species NO, is an intermediate. omposi- o steps y is the anism? tion of as eth- work? ogress 13.102 Radioactive plutonium-239 (11 = 2.44 × 105 yr) is used in nuclear reactors and atomic bombs. If there are 5.0 x 102 g of the isotope in a small atomic bomb, how long will it take for the substance to decay to 1.0 × 102 g, too small an amount for an effective bomb? 13.103 Many reactions involving heterogeneous catalysts are hot is rate k. An example is the decom-

Explanation / Answer

101)

Let the 1st step be:

NO2 (g) + NO2 (g) —> NO (g) + NO3 (g)

Let the 2nd step is:

NO3 (g) + CO (g) —> CO2 (g) + NO2 (g)

let the step be slowest step and rate law will be

Rate = k [NO2]^2

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