Which statement below best describes the relationship between activation energy and the rate constant? O As the activation energy increases, the rate constant decreases O As the activation energy increases, the rate constant decreases O The activation energy and rate constant are both dependent upon temperature O As the activation energy decreases, the rate constant decreases The graph to the right represents the number of particles that collide. The line represents the activation energy of a particular chemical reaction. Which statement below describes how the graph would shift if the temperature of the reaction was increased? KINETIL NRG O The curve would shift down and to the right The activation energy line would shift to the left O The activation energy line would shift to the right O The curve would shift up and to the left

Which statement below best describes the relationship between activation energy and the rate constant? O As the activation energy increases, the rate constant decreases O As the activation energy increases, the rate constant decreases O The activation energy and rate constant are both dependent upon temperature O As the activation energy decreases, the rate constant decreases The graph to the right represents the number of particles that collide. The line represents the activation energy of a particular chemical reaction. Which statement below describes how the graph would shift if the temperature of the reaction was increased? KINETIL NRG O The curve would shift down and to the right The activation energy line would shift to the left O The activation energy line would shift to the right O The curve would shift up and to the left

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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9. Which situation appears to violate the collision theory? A. The reaction rate increases as temperature is increased. B. The reaction rate increases as the surface area of the reactants increases. . A reaction takes place more rapidly when the concentration of the reactants is decreased. D. The reaction rate decreases as the reaction mixture is cooled.
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The inverse molar concentration of a reactant, A, versus time is a straight-line dependence illustrated in the graph on the right for the reaction: A - products 12.0+ 10.0- 8.0- 6.0- 4.0- 2.0- 0.0+ 0'0 5.0 1.0 2.0 3.0 4.0 Time, t, s What are (1) The order of reaction: (2) The rate constant of reaction: 1/[A], 1/M
On which factor the rate constant of a reaction does not depend upon a) Temperature b) Activation energy c) Catalyst d) Concentration of reactants and products
The following statements about activation energy are all factual, EXCEPT:A. Catalysts lower the activation energy of a reaction.B. Enthalpy is negative if the energy of the reactants are greater than the energy of the products.C. In the reverse reaction of the energy diagram reactants are on the left and products are on the right.D. The activation energy of a reverse reaction is less than the forward reaction in an endothermic reaction.
Given the reaction SO, + CO, --> SO3 + CO, which atoms must collide for the reaction to occur according to collision orientation in the collision theory? The S in SO, must collide with the C in CO2 O The O in SO, must collide with the C in CO, O The O in CO, must collide with the S in SO, OThe O in CO, must collide with the O in SO, O It doesn't matter which atoms collide
A catalyst changes the rate of a chemical reaction by.. ..... Select one: O a. changing the enthalpy of reaction for the reaction O b. changing the frequency of collisions between molecules. providing another pathway which has a different activation energy. Od. changing the products formed in the reaction.
If the temperature of a reaction is increased, the rate also increases. Which best explains why this happens? the mechanism reduces the activation energy at higher temperatures Oa higher percentage of collisions have energy greater than Ea the equilibrium shifts to the right the Arrhenius equation says that this must be the case there are more collisions between reactant molecules
Which of the following is not a postulate of collision theory? A. The rate constant is directly proportional to the energy of activation. B. Reactant molecules must collide with a certain minimum energy in order to form products. C. The maximum in the potential energy curve, the activation energy, is determined by the structure of the activated complex or transition state. D. Reactant molecules must collide with the correct orientation in order to form products. E. Reactant molecules must collide to react.
Some measurements of the initial rate of a certain reaction are given in the table below. [N:] H2 initial rate of reaction 0.570M 0.191M 85.0M/s 1.21 M| 0.191M 383. M/s 0.570M 0.0652M 29.0 M/s olo Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 3 significant digits. Also be sure your answer has the correct unit symbol. rate = k| x10 k = ?
One aspect of the collision theory and transition state theory is the role of the nature of the reactants. Using the information below, which of the following metals has the appropriate nature for this reaction to take place if B is aluminum?
The concentration of a reactant is measured at two time points as a reaction proceeds. At the first time point, the concentration of the reactant is 0.5 M; 20 seconds later, the concentration is 0.45 M. At what rate is the reactant being consumed? 0.0025 M/s 0.05 M/s 0.005 M/s 0.025 M/s 0.0225 M/s