23. Which of the following statements is not true? A) Two reactions can have identical values for AH° but very different Ea values. B) The larger the activation energy, the slower the reaction. C) AH° determines the height of the energy barrier. D) The lower the activation energy, the faster the reaction. 24. What is the name given to the reaction species that lies at an energy minimum between steps on a reaction energy diagram? A) Transition state B) Activation energy C) Reactive intermediate D) Equilibrium product 25. Which of the following statements about a two-step reaction mechanism is true? A) The transition states are located at energy minima. B) Each step is characterized by its own value of AH° and Ea. C) The rate-determining step has the lower energy transition state. D) The reactive intermediate is located at an energy maximum.

23. Which of the following statements is not true? A) Two reactions can have identical values for AH° but very different Ea values. B) The larger the activation energy, the slower the reaction. C) AH° determines the height of the energy barrier. D) The lower the activation energy, the faster the reaction. 24. What is the name given to the reaction species that lies at an energy minimum between steps on a reaction energy diagram? A) Transition state B) Activation energy C) Reactive intermediate D) Equilibrium product 25. Which of the following statements about a two-step reaction mechanism is true? A) The transition states are located at energy minima. B) Each step is characterized by its own value of AH° and Ea. C) The rate-determining step has the lower energy transition state. D) The reactive intermediate is located at an energy maximum.

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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