Chapter 13

Chapter 13 - Page 235 Chapter 13: Chemical Kinetics 1....

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Unformatted text preview: Page 235 Chapter 13: Chemical Kinetics 1. Which one of the following units would not be an acceptable way to express reaction rate? A) M/s B) M min 1 C) L mol 1 s 1 D) mol L 1 s 1 E) mmHg/min Ans: C Category: Easy Section: 13.1 2. Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO 2 (aq) + 2OH (aq) ClO 2 (aq) + ClO 3 (aq) + H 2 O(l) Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10 1 M/s. What is the initial rate of appearance of chlorite ion under thos same conditions? A) 5.75 x 10 2 M/s D) 4.60 x 10 1 M/s B) 1.15 x 10 1 M/s E) 9.20 x 10 1 M/s C) 2.30 x 10 1 M/s Ans: B Category: Medium Section: 13.1 3. For the reaction BrO 3 + 5Br + 6H + 3Br 2 + 3H 2 O at a particular time, [BrO 3 ]/ t = 1.5 10 2 M/s. What is [Br ]/ t at the same instant? A) 13 M/s D) 3.0 10 3 M/s B) 7.5 10 2 M/s E) 330 M/s C) 1.5 10 2 M/s Ans: B Category: Medium Section: 13.1 4. For the following reaction, P(C 6 H 14 )/ t was found to be 6.2 10 3 atm/s. C 6 H 14 (g) C 6 H 6 (g) + 4H 2 (g) Determine P(H 2 )/ t for this reaction at the same time. A) 6.2 10 3 atm/s D) 1.6 10 3 atm/s B) 1.6 10 3 atm/s E) 2.5 10 2 atm/s C) 2.5 10 2 atm/s Ans: C Category: Medium Section: 13.1 5. For the reaction C 6 H 14 (g) C 6 H 6 (g) + 4H 2 (g), P(H 2 )/ t was found to be 2.5 10 2 atm/s, where P(H 2 ) is the change in pressure of hydrogen. Determine P(C 6 H 14 )/ t for this reaction at the same time. A) 2.5 10 2 atm/s D) 0.10 atm/s B) 6.2 10 3 atm/s E) 6.2 10 3 atm/s C) 2.5 10 2 atm/s Ans: B Category: Medium Section: 13.1 Chapter 13: Chemical Kinetics Page 236 6. For the hypothetical reaction A + 3B 2C, the rate of appearance of C given by ( [C]/ t) may also be expressed as A) [C]/ t = [A]/ t C) [C]/ t = (2/3) [B]/ t B) [C]/ t = (3/2) [B]/ t D) [C]/ t = (1/2) [A]/ t Ans: C Category: Medium Section: 13.1 7. For the overall chemical reaction shown below, which one of the following statements can be rightly assumed? 2H 2 S(g) + O 2 (g) 2S(s) + 2H 2 O(l) A) The reaction is third-order overall. B) The reaction is second-order overall. C) The rate law is, rate = k[H 2 S] 2 [O 2 ]. D) The rate law is, rate = k[H 2 S] [O 2 ]. E) The rate law cannot be determined from the information given. Ans: E Category: Medium Section: 13.2 8. The reaction A + 2B products has been found to have the rate law, rate = k[A] [B] 2 ....
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This note was uploaded on 02/08/2012 for the course CHEM 161 taught by Professor Shaklovich during the Spring '10 term at Harvard.

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Chapter 13 - Page 235 Chapter 13: Chemical Kinetics 1....

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