REXBook Store24. A rule of thumb is that for a typical reaction, if concentrations are unchanged, a 10-K rise in temperature increases thereaction rate by two to four times. Use an average increase of three times to answer the questions below.a) What is the approximate activation energy of a "typical" chemical reaction at 298 K?b) If a catalyst increases a chemical reaction's rate by providing a mechanism that has a lower activation energy, then whatchange do you expect a 10-K increase in temperature to make in the rate of a reaction whose uncatalyzed activationenergy of 75 kJ/mol has been lowered to one-half this value (at 298 K) by addition of a catalyst?

a) The Arrhenius equation is given as

Answered: reaction, if concentrations are…

reaction, if concentrations are unchanged, a 10-K rise Jse an average increase of three times to answer the qu tion energy of a "typical" chemical reaction at 298 K?

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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REX
Book Store
24. A rule of thumb is that for a typical reaction, if concentrations are unchanged, a 10-K rise in temperature increases the
reaction rate by two to four times. Use an average increase of three times to answer the questions below.
a) What is the approximate activation energy of a "typical" chemical reaction at 298 K?
b) If a catalyst increases a chemical reaction's rate by providing a mechanism that has a lower activation energy, then what
change do you expect a 10-K increase in temperature to make in the rate of a reaction whose uncatalyzed activation
energy of 75 kJ/mol has been lowered to one-half this value (at 298 K) by addition of a catalyst?

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