19. The reaction 2 SO2(8) + 102(g) 22 SO3(8) is exothermic. Which of the following statements iscorrect concerning the effect of lowering the temperature on the values of: Kc is the equilibriumconstant; kf and kr are the forward and reverse rate constants. Symbols: ↑, increases; , decreases; = nochange.KckfkrА.C.D.20. The reaction 2 SO2(g) + 102(g) 2 2 S03(g) is exothermic. Which of the following statements iscorrect concerning the effect of a catalyst on the values of: Kç is the equilibrium constant; Ea is theactivation energy; and AH° is the enthalpy difference between the reactants and products. Symbols: 1,increases; V, decreases; = no change.K.EaΔΗ.А.В.С.D.21. The following statements concern the affect of concentration, pressure, temperature, and otherfactors on the amount of SO3 present when the reaction 2 SO2(g) + 102(g) 2 2 SO3(g) reachesequilibrium. Which one of these statements is incorrect?A. Lowering the temperature increases the amount of SO3 that is produced.The amount of SO3 produced will be bigger if pure O2 is used instead of ordinary air. (Air is a 4 to1 mixture of N2 and O2, respectively.)В.C. Removing SO3 as it is produced will "shift the reaction to the right" and produce more SO3.D. The catalyst, V2O5, has no effect on the equilibrium concentration of SO3.E. Increasing pressure (by decreasing volume) has no effect on the amount of SO3 produced.B. Questions 15-21 concern the reaction 2 SO2(8) + 102(8) 22 SO3(g), the crucial step in theproduction of sulfuric acid. For this reaction AH° = -198 kJ/mol and AS° = -0.187 kJ/mol·K. SO2(perhaps from the production of copper metal) is mixed with air and heated, resulting in the formationof SO3. (All concentrations are in Kolks units.)

Answered: Image /qna-images/answer/ed688e52-7dce-469d-ae3f-5ea52ce60de8.jpg

19. The reaction 2 SO2(g) + 102(g) 22 S03(8) is exothermic. Which of the following statements is correct concerning the effect of lowering the temperature on the values of: Kc is the equilibrium constant; kf and kr are the forward and reverse rate constants. Symbols: ↑, increases; , decreases; = no change. Kc kf kr А. В. D. C.

19. The reaction 2 SO2(g) + 102(g) 22 S03(8) is exothermic. Which of the following statements is correct concerning the effect of lowering the temperature on the values of: Kc is the equilibrium constant; kf and kr are the forward and reverse rate constants. Symbols: ↑, increases; , decreases; = no change. Kc kf kr А. В. D. C.

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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