(A) The reaction A 2 B C is first order If the initial A 2 80 M and k 3 02 x 10 3 s 1 , what is the value of A after 325 s (B) Use data tabulated in Figure 20 4, together with equation (20 13), to show that the decomposition of H 2 O 2 is a first order reaction Use a pair of data points for H 2 O 2 0 and H 2 O 2 t and their corresponding times to solve for k Repeat this calculation using other sets of data How should the results compare Figure 20 4 Eq 20 13 H 0 800 0 400 0 000 0 400 0 800 1 200 Slope 1 095 L 1 095 1500 s 600 1500 s 7 30 x 10 45 1 I 1200 1800 Time, s 2400 3000

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Question: (A) The reaction A 2 B + C is first order. If the initial [A] = 2.80 M and k = 3.02 x 10

(A) The reaction A → 2 B + C is first order. If the initial [A] = 2.80 M and k = 3.02 x 10^-3 s^-1, what is the value of [A] after 325 s?

(B) Use data tabulated in Figure 20-4, together with equation (20.13), to show that the decomposition of H₂O₂ is a first-order reaction. Use a pair of data points for [H₂O₂]₀ and [H₂O₂]_t and their corresponding times to solve for k. Repeat this calculation using other sets of data. How should the results compare?

Figure 20-4

Eq. 20.13

[H] 0.800 0.400 0.000 -0.400- -0.800 - -1.200 Slope -1.095 L - 1.095 1500 s 600 1500 s -7.30 x 10-45-1 I 1200 1800 Time, s 2400 3000

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