11 assumingtheactivat ionenergiesareequalwhich

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Unformatted text preview: e activation energy for a certain reaction is 76.7 kj/mo l. How many t imes faster will the reaction occur at 50°C compared to 0°C? 10. The reaction 2 NO (g) + O2 (g) ® 2 NO2 (g) was studied and the fo llowing mechanis m was proposed: (1) (2) NO (g) + O2 (g) « NO3 (g) (fast) NO3 (g) + NO (g) ® 2 NO2 (g) (slow) Determine the rate law based on this mechanism. 11. Assuming the activat ion energies are equal, which of the fo llowing react ions will occur at a higher rate at 50°C? (Hint: What factors affect the rate of a reaction) NH3 (g) + HCl (g) ® NH4Cl (s) N(CH3)3 (g) + HCl (g) ® (CH3)3NHCl (s) 5 12. The fo llowing rate data was collected for the reaction shown below: A + B ® C + D Exp. # 1 2 3 [A] (M) 0.50 1.50 3.00 [B] (M) 1.50 1.50 3.00 Init ial Rate (M/min) 4.2 x 10 –3 – 1.3 x 10 2 – 5.2 x 10 2 Determine the Rate Law and calculate the rate constant (k) for this reaction. 13. The fo llowing mechanism has been proposed for reaction of HBr with O2 to form H2O and Br2 HBr + O2 ® HOOBr HOOBr + HBr ® 2 HOBr HOBr + HBr ® H2O + Br2 a) Ident ify all react i...
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