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a. The rate of an exothermic reaction decreases with increasing temperature according to Le Chatelier's principle. b. Favourable kinetics can make a reaction that takes place even if it is ther- modynamically not feasible. c. If a reaction is thermodynamically. feasible, then it must take place.

a. The rate of an exothermic reaction decreases with increasing temperature according to Le Chatelier's principle. b. Favourable kinetics can make a reaction that takes place even if it is ther- modynamically not feasible. c. If a reaction is thermodynamically. feasible, then it must take place.

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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nar Ray (z-lib.org).pdf - Adobe Reader 159% Comm nas been opened read-only to prevent modification. a. The rate of an exothermic reaction decreases with increasing temperature according to Le Chatelier's principle. b. Favourable kinetics can make a reaction that takes place even if it is ther- modynamically not feasible. c. If a reaction is thermodynamically feasible, then it must take place. d. Kinetic barriers can stop a reaction even if there is a thermodynamic driving force for transformation. e. The rate of a reaction is more sensitive to temperature changes if the acti- vation energy is smaller. f. The rate of a reaction depends on the free energy change for the reaction. g. The "saddle point is the highest point on a potential cnergy surface. h. For a given activation energy. temperature changes have more effect on the rate constant at lower temperatures. i. A process is operating at a mean temperature: the temperature oscillating with a fixed frequency for a given time: the extent of reaction is more if the amplitude of temperature fluctuation is greater. j. A catalyst cannot change the driving force-of a reaction. k. The rate constant of a reaction increases a hundredfold when the tempera- ture rise is 200 C. The rate constant will increasing more than fifty times if the temperature rise is 100
Transcribed Image Text:nar Ray (z-lib.org).pdf - Adobe Reader 159% Comm nas been opened read-only to prevent modification. a. The rate of an exothermic reaction decreases with increasing temperature according to Le Chatelier's principle. b. Favourable kinetics can make a reaction that takes place even if it is ther- modynamically not feasible. c. If a reaction is thermodynamically feasible, then it must take place. d. Kinetic barriers can stop a reaction even if there is a thermodynamic driving force for transformation. e. The rate of a reaction is more sensitive to temperature changes if the acti- vation energy is smaller. f. The rate of a reaction depends on the free energy change for the reaction. g. The "saddle point is the highest point on a potential cnergy surface. h. For a given activation energy. temperature changes have more effect on the rate constant at lower temperatures. i. A process is operating at a mean temperature: the temperature oscillating with a fixed frequency for a given time: the extent of reaction is more if the amplitude of temperature fluctuation is greater. j. A catalyst cannot change the driving force-of a reaction. k. The rate constant of a reaction increases a hundredfold when the tempera- ture rise is 200 C. The rate constant will increasing more than fifty times if the temperature rise is 100
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