From the data in Table 20.2 and Figure 20-2 for the decomposition of H₂O₂, determine (a) the initial rate of reaction, and (b) [H₂O₂]_t at t = 100 s, assuming that the initial rate is constant for at least 100 s.

Table 20.2

Figure 20-2

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TABLE 20.2 Decomposition of H₂O2-Derived Rate Data IV I Time, s 0 400 800 1200 1600 2000 2400 2800 II At, s 400 400 400 400 400 400 400 ||| [H₂O₂], M 2.32 1.72 1.30 0.98 0.73 0.54 0.39 0.28 A[H₂O₂], M -0.60 -0.42 -0.32 -0.25 -0.19 -0.15 -0.11 V Reaction Rate - A[H₂O₂]/At, Ms 1 15.0 x 10-4 10.5 x 10-4 8.0 × 10-4 6.3 x 10-4 4.8 x 10-4 3.8 x 10-4 2.8 x 10-4