chem_126_common_1_2008_0s0s0szzz

chem_126_common_1_2008_0s0s0szzz - Feb. 15, 2008 Chemistry...

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Feb. 15, 2008 Chemistry 126 Common 1 1) The reactant concentration is plotted versus time and produces a straight line. What is the order of the reaction? A. 0 B. ½ C. 1 D. 2 E. 3 2) What is the numerical value of the rate constant? A. 0.0050 B. 0.025 C. 0.030 D. -33 E. -40. 3) What are the units for the rate constant? A. sec -1 B. M sec -1 C. M -1 sec -1 D. M -2 sec -1 4-5) The table gives the experimental data for the reaction: A(g) + B(g) C(g) + D(g) at 600 K. 4) What is the order of the reaction with respect to B? A. 0 B. ½ C. 1 D. 2 E. 3 5) What is the overall order of the reaction? (You first need to find the order with respect to A.) A. 0 B. 1 C. 2 D. 3 E. 4 6) The table gives the experimental data for the reaction: 2A(g) B(g) at 800 K. What is the rate constant in min -1 ? A. 0.17 min -1 B. 40 . min -1 C. 2.5 min -1 D. 0.67 min -1 E. 10. min -1 Run [A] (M) [B] (M) Rate (M/hr) 1 0.20 0.15 0.570 2 0.20 0.30 2.28 3 0.40 0.60 36.5 Run [A] (M) Rate (M/sec) 1 0.25 0.042 2 0.35 0.059 3 0.50 0.084 Questions 1-3 0 0.1 0.2 0.3 0.4 0.5 0.6 0 5 10 15 20 Time (sec) Reactant Conc. (M)
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7) The reaction for the decomposition of B is: B(g) 2C(g) + D(g). At a certain temperature, the concentration of C is 0.090 M after 5.00 min. After 27.0 min it is 0.35 M. What is the average rate of reaction for this time interval? A. 0.013 M/min B. 0.012 M/min C. 0.0059 M/min D. 0.065 M/min E. -0.13 M/min 8) For the reaction A B + C, ln[A] is plotted versus the time in hours. A straight line is obtained whose slope is -0.55 hr -1 . What is the concentration of A after 2.5 hr if [A] o = 1.40 M?
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chem_126_common_1_2008_0s0s0szzz - Feb. 15, 2008 Chemistry...

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