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CH13M009 1. (Points: 1.2) The decomposition of dinitrogen pentoxide is described by the chemical equation 2N2O5 ......> 4NO2 +O2 If the rate of appearance of O2 is equal to 2.40 mol/min at a particular moment, what is the rate of N2O5 disappearance of at that moment? a. 0.600 mol/min b. 1.20 mol/min c. 4.80 mol/min d. 9.60 mol/min Save Answer 2. CH13M049 (Points: 1.2) The elementary reaction representing the formation of ozone: O2 + O +M.........> O3 + M*is an example of a ________ reaction. a. unimolecular b. bimolecular c. termolecular d. tetramolecular Save Answer 3. CH13M028 (Points: 1.2) Using the method of initial rates for the reaction A....>B, if the initial concentration of A is doubled and the rate of reaction quadruples, what is the order of reaction with respect to A? a. zeroth b. first c. second d. fourth Save Answer 4. CH13T045 (Points: 1.2) A reaction is found to have an activation energy of 108 kJ/mol. If the rate constant for this reaction is 4.60 x 10-6 s-1 at 275 K, what is the rate constant at 366 K? a. 11.7 s-1 b. 1.72 s-1 c. 0.580 s-1 d. 1.40 x 10-5 s-1 e. 1.85 x 10-4 s-1 Save Answer 5. CH13T030 (Points: 1.2) What data should be plotted to show that experimental concentration data fits a zeroth-order reaction? a. ln[reactant] vs. time b. 1/[reactant] vs. time c. ln(k) vs. 1/T d. ln(k) vs. Ea e. [reactant] vs. time Save Answer 6. CH13M002 (Points: 1.2) "Instantaneous rate" is defined as the a. change concentration in per unit time. b. equation showing how the rate depends on the concentration of each reactant. c. rate of reaction at a particular time. d. rate of reaction during a time interval. Save Answer 7. CH13M050 (Points: 1.2) The elementary reaction: 2HI ......> H2 +I2, is an example of a ________ reaction. a. unimolecular b. bimolecular c. termolecular d. tetramolecular Save Answer 8. CH13T049 (Points: 1.2) Which of the following statements is TRUE? a. The rate constant does not depend on the activation energy for a reaction where the products are lower in energy than the reactants. b. A catalyst raises the activation energy of a reaction. c. Rate constants are temperature dependent. d. The addition of a homogeneous catalyst does not change the activation energy of a given reaction. e. None of the above are true. Save Answer 9. CH13M014 (Points: 1.2) Which statement is true for the general rate law: Rate=k[A]m[B]n? a. It can be written from the stoichiometry of the overall reaction. b. The overall order of the reaction is equal to m times n. c. The values for the exponents must be determined by experiment. d. The exponents in the rate law must be positive integers. Save Answer 10. CH13T032 (Points: 1.2) The first-order decay of radon has a half-life of 3.823 days. How many grams of radon remain after 7.22 days if the sample initially weighs 250.0 grams? a. 4.21 g b. 183 g c. 54.8 g d. 76.3 g e. 67.5 g Save Answer CBCAECBCCE ... View Full Document

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