Question

The second-order reaction, 2 Mn(CO)_5 rightarrow Mn_2 (CO)_10 is found to have a rate constant equal to 512 M^-1 S^-1. If the initial concentration of Mn(CO)_5 is 0.011 M, how long will it take for the reactant concentration to reach 0.0011 M? Units: s a. 1.6 b. 5.1 c. 0.020 d. 0.28 A plot of a 1/[A] versus time gave a straight line. This indicates that A rightarrow B + C a. the reaction is zero order in reagent A b. the reaction is first order in reagent A c. the reaction is second order In reagent A d. the reaction rate is independent of the concentration of reagent A Which of the following is no| true regarding catalysts and catalysis? a. catalysts provide a lower energy pathway to products. b. both the forward and reverse reaction rates are increased by the presence of the catalyst. c. A catalyst works by providing a new reaction pathway. d. A catalyst lowers the energy of the reaction products. The reaction for the decomposition of dinitrogen monoxide gas to form oxygen radical is: N_2 O(g) = N_2 (g) + O(g). If the rate constant is 0.0369 s^-1 and the Arrhenius constant is 8.00 times 10^11 s^-1, what is the activation energy for the first-order reaction at 718 degree C? Units: kJ/mol a 253 b.3.66 c. 183 d. 2.50

Answer 1

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