The use of a catalyst causes the rate constant for the reaction R → P to increase by a factor of exactly 450 at 298 K. Which one of the following statements best describes the effect of the catalyst? Assume that the rate constant for the reaction obeys the Arrhenius equation and that the Arrhenius pre- exponential factors are the same for both the catalyzed and uncatalyzed reactions. The catalyst decreases the activation energy by 7.02 kJ mol-1 The catalyst increases the activation energy by 15.1 k) mol1 The catalyst decreases the activation energy by 15.1 kJ mol-1 The catalyst decreases the enthalpy change by 21.3 kJ mol-1 The catalyst increases the activation energy by 7.02 kJ mol1

The use of a catalyst causes the rate constant for the reaction R → P to increase by a factor of exactly 450 at 298 K. Which one of the following statements best describes the effect of the catalyst? Assume that the rate constant for the reaction obeys the Arrhenius equation and that the Arrhenius pre- exponential factors are the same for both the catalyzed and uncatalyzed reactions. The catalyst decreases the activation energy by 7.02 kJ mol-1 The catalyst increases the activation energy by 15.1 k) mol1 The catalyst decreases the activation energy by 15.1 kJ mol-1 The catalyst decreases the enthalpy change by 21.3 kJ mol-1 The catalyst increases the activation energy by 7.02 kJ mol1

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section: Chapter Questions

Problem 11.ACP: (Section 11-5) A rule of thumb is that for a typical reaction, if concentrations are unchanged, a...

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