17. At a certain temperature K. = 0.434 for the reaction 2 SO2(8) + 102(g) 2 2 SO3(g). What is the value of K, for the reaction 1 SO3(8) 2 1 SO2(8) + 2 O2(g)? A. K. = 2.30 В. К. - 0.0217 С. К. - 1.15 D. K. = 1.52 18. The reaction 2 SO2(8) + 102(8) 22 SO3(8) is catalyzed by V205, a homogeneous catalyst, and by platinum metal, a heterogeneous catalyst. A similar reaction is catalyzed in our bodies by an enzyme called sulfite oxidase. Which of the following statements concerning catalysts is incorrect? A. Catalysts do not get used up during chemical reactions because they do not actually react, they just bring the reactants together more often and with higher energy. The active site of enzymes like sulfite oxidase lowers the energy of the transition state of the reaction that is being catalyzed. В. C. Catalysts speed up reactions by providing a rate-determining step with a lower activation energy than that of the uncatalyzed reaction. D. Heterogeneous catalysts speed up reactions by absorbing the reactants onto the catalyst surface: this increases the reactivity of the reactants.

17. At a certain temperature K. = 0.434 for the reaction 2 SO2(8) + 102(g) 2 2 SO3(g). What is the value of K, for the reaction 1 SO3(8) 2 1 SO2(8) + 2 O2(g)? A. K. = 2.30 В. К. - 0.0217 С. К. - 1.15 D. K. = 1.52 18. The reaction 2 SO2(8) + 102(8) 22 SO3(8) is catalyzed by V205, a homogeneous catalyst, and by platinum metal, a heterogeneous catalyst. A similar reaction is catalyzed in our bodies by an enzyme called sulfite oxidase. Which of the following statements concerning catalysts is incorrect? A. Catalysts do not get used up during chemical reactions because they do not actually react, they just bring the reactants together more often and with higher energy. The active site of enzymes like sulfite oxidase lowers the energy of the transition state of the reaction that is being catalyzed. В. C. Catalysts speed up reactions by providing a rate-determining step with a lower activation energy than that of the uncatalyzed reaction. D. Heterogeneous catalysts speed up reactions by absorbing the reactants onto the catalyst surface: this increases the reactivity of the reactants.

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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