p13 - CHAPTER 13- Practice Exercise Dr. PAHLAVAN Chemical...

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CHAPTER 13- Practice Exercise Dr. PAHLAVAN Chemical Kinetics Problem #1. Consider reaction; 2N 2 O (g) 2N 2 (g) + O 2 (g) (a) Write three different expressions which might be used to describe rates of reaction. (b) Relate the three rates to each other and explain the relative rate. Problem #2. Consider the reaction; 2NO (g) + 2H 2 (g) N 2 (g) + 2H 2 O (g) (a) Write the rate law expression for reaction. (b) If rate law is = K[NO] 2 [H 2 ], I) determine the overall order and solve equation for rate constant. II) Write unit of K if the unit of concentration is M or atm. (c) How does the initial rate change if the initial concentration of NO (g) is doubled and that of H 2 (g) remains constant? (d) How does the initial rate change if the initial concentration of H 2 (g) is doubled and that of NO (g) remains constant? Problem #3. Use the table of data shown below to calculate the average rate of the reaction ; 2NO + Br 2 2NOBr (a) between 10 sec and 30 sec (b) after 25 sec Time (seconds) : 0 10 20 30 40 [NO] mol/L : 0.124 0.110 0.088 0.073 0.054 Problem #4. The half-life of a first order reaction is 6.00x10 - 2 s. What is the rate constant for the reaction? Problem #5.
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This note was uploaded on 09/24/2011 for the course CHEM 369 taught by Professor Wang during the Spring '11 term at University of Houston.

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p13 - CHAPTER 13- Practice Exercise Dr. PAHLAVAN Chemical...

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