The illustration below shows the energy profile for formation of ozone. What is the activation energy for the reaction? O3+0 406 kJ 392 kJ O2 + O2 Reaction Progress Oa. 406+392 =798 kJ Ob. 392 kJ O c. 406-392 = 14 kJ d. 406 k.J

r = L [A] [B] ² x2 x 2 r=k [2A) [21] ² 8x bigger than 2 + 4 = 8 12. Consider a reaction of the form 2A + BC. The data for this reaction is given below: Initial rate of formation of C M/s Initial [A] Initial [B] 4.0 x 10-² 0.30 0.10 2.0 x 10-² 0.50 0.05 6.0 x 10-² 0.50 0.15 1.0 x 10-² 0.025 a. What rate law is consistent with this data? 0.40 b. Calculate k and specify units. How long will it take for the concentration of C to equal to 0.10 molar if the initial concentration of all the species are [A] = 0.4 M, [B] = 0.3 M and [C] = 0.0 M?

2. What is the unit of k for each of the following type of reaction? First order reaction a. b. Second order reaction Third order reaction c.

Answer the following question using the reaction coordináte diagram shown below. 280 240 200 160 120- 80 40 Time What is the activation energy for the reverse reaction? O A. -160 kJ B. -80 kJ O C. 80 kJ D. 160 kJ tent (H) kilojoules

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The proposed mechanism for a reaction is NO + 03 2 N03 0 Fast pre-equilibrium NO3+0 N02 +02 Slow Which of the following would be a rate law for the reaction? OA. rate k[NO][03] B. rate k[O3] OC. rate = k[NO] O D. rate = k[O][NO3] E. rate k[NO2][02]

What is the value of the Arrhenius activation energy (E) for a chemical reaction if the rate constant, k, is 2.0 x 1045at 310 K and 6.0 x 10 s at 320 K ? (Gas constant R = 8.314 J/mol. K) Select one: O a. 24 kl/mol O b. 91 kl/mol O c. 42 kJ/mol O d. 72 kJ/mol

The activation energy for the reaction of 2 NO2(3) 2NO(g) + O2(g) has been determined to be 111 kJ-mol-1. If the rate constant at 300 °C is 0.54 M-1.s-1, what is the rate constant when the temperature is increased to 310 °C? 0.00050 M-1.s-1 0.54 M-1.s-1 0.81 M-1.s-1 2.3 M-1.s-1

Given the intermediate step for the reaction: SO + O2 > SO2 + O Which collision path would be an "effective" collision?  A. SO- O=O or B. O=O- SO Then explain why you selected the choice.