Exam 13: Chemical Kinetics
Exam 1: Units of Measurement for Physical and Chemical Change173 Questions
Exam 2: Atoms and Elements161 Questions
Exam 3: Molecules,compounds,and Nomenclature172 Questions
Exam 4: Chemical Reactions and Stoichiometry247 Questions
Exam 5: Gases146 Questions
Exam 6: Thermochemistry145 Questions
Exam 7: The Quantum-Mechanical Model of the Atom164 Questions
Exam 8: Periodic Properties of the Elements129 Questions
Exam 9: Chemical Bonding I: Lewis Theory136 Questions
Exam 10: Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory158 Questions
Exam 11: Liquids, solids, and Intermolecular Forces127 Questions
Exam 12: Solutions153 Questions
Exam 13: Chemical Kinetics156 Questions
Exam 14: Chemical Equilibrium124 Questions
Exam 15: Acids and Bases141 Questions
Exam 16: Aqueous Ionic Equilibrium159 Questions
Exam 17: Gibbs Energy and Thermodynamics119 Questions
Exam 18: Electrochemistry107 Questions
Exam 19: Radioactivity and Nuclear Chemistry108 Questions
Exam 20: Organic Chemistry I: Structures103 Questions
Exam 21: Organic Chemistry II: Reactions93 Questions
Exam 22: Biochemistry49 Questions
Exam 23: Chemistry of the Nonmetals45 Questions
Exam 24: Metals and Metallurgy42 Questions
Exam 25: Transition Metals and Coordination Compounds50 Questions
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A reaction is found to have an activation energy of 38.0 kJ mol-1.If the rate constant for this reaction is 1.60 × 102 L mol-1 s-1 at 249 K,what is the rate constant at 436 K?
Free
(Multiple Choice)
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Correct Answer:
D
Given the following balanced equation,determine the rate of reaction with respect to [O3].If the rate of loss of O3 is 3.91 × 10-1 mol L-1 s-1,what is the rate of the formation of O2?
2O3(g)→ 3O2(g)
Free
(Multiple Choice)
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Correct Answer:
D
What is the activation energy for a reaction that has a rate constant of 0.0883 L mol-1 s-1 at 333 K and 0.469 L mol-1 s-1 at 366 K?
Free
(Multiple Choice)
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Correct Answer:
C
Without performing complex calculations,determine the order of a reaction that has the following initial rates for the specified starting concentration: [] Initial Rate 0.20 0.0050 0.40 0.020 0.80 0.080
(Multiple Choice)
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Given the following balanced equation,determine the rate of reaction with respect to [NOCl].If the rate of Cl2 loss is 4.84 × 10-2 mol L-1 s-1,what is the rate of formation of NOCl?
2NO(g)+ Cl2(g)→ 2NOCl(g)
(Multiple Choice)
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The first-order decomposition of N2O at 1000 K has a rate constant of 0.76 s-1.If the initial concentration of N2O is 10.9 mol L-1,what is the concentration of N2O after 9.6 s?
(Multiple Choice)
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Given the following rate law,how does the rate of reaction change if the concentration of Y is doubled?
Rate = k [X]2[Y]3
(Multiple Choice)
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Determine the missing initial rate for the following order reaction given the following information: [] Initial Rate 0.8456 0.0326 0.6843 0.0293 0.4321 ?
(Multiple Choice)
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Without performing complex calculations,determine the order of a reaction that has the following initial rates for the specified starting concentration: []() Initial Rate 0.0143 3.00\times1 0.0429 9.00\times1 0.0715 1.5\times1
(Multiple Choice)
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Calculate the frequency factor,A,for a reaction with a rate constant of 6.3 × 103 s-1 and an activation energy,Ea,of 74 kJ mol-1 at 315 K.
(Multiple Choice)
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The isomerization of methylisonitrile to acetonitrile
NC(g)? CN(g)
is first order in NC.The rate constant for the reaction is 5.26 × 10-3 at 531 K.The of the reaction when the initial [ NC] is 0.030 mol L-1 is ________ s.
(Multiple Choice)
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The rate of disappearance of HBr in the gas phase reaction
2HBr(g)? (g)+ (g)
Is 0.190 mol L-1 at 150 °C.The rate of reaction is ________ mol L-1 .
(Multiple Choice)
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For a particular first-order reaction,it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value.What is the value for rate constant (in s-1)for the reaction?
(Multiple Choice)
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A reaction is found to have a rate constant of 3.36 × 104 L mol-1 s-1 at 344 K and a rate constant of 7.69 L mol-1 s-1 at 219 K.Determine the activation energy for this reaction.
(Multiple Choice)
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Given the following balanced equation,determine the rate of reaction with respect to [NOCl].If the rate of NO loss is 1.68 × 10-2 mol L-1 s-1,what is the rate of formation of NOCl?
2NO(g)+ Cl2(g)→ 2NOCl(g)
(Multiple Choice)
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The aquation of tris (1,10-phenanthroline)iron(II)in acid solution takes place according to the equation:
Fe(phen)32+ + 3H3O+ + 3H2O → Fe(H2O)62+ + 3phenH+.
If the activation energy,Ea,is 126 kJ mol-1 and the rate constant at 30 °C is 9.8 × 10-3 min-1,what is the rate constant at 35°C?
(Multiple Choice)
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Which of the following represents the equation for a first-order half-life?
(Multiple Choice)
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Which of the following represents the integrated rate law for a second-order reaction?
(Multiple Choice)
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The reaction that occurs in a Breathalyzer,a device used to determine the alcohol level in a person's bloodstream,is given below.If the rate of appearance of Cr2(SO4)3 is 1.64 mol min-1 at a particular moment,what is the rate of disappearance of C2H6O at that moment?
2K2Cr2O7 + 8H2SO4 + 3C2H6O → 2Cr2(SO4)3 + 2K2SO4 + 11H2O
(Multiple Choice)
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