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47. Which of the following affects the activation energy of a reaction? temperature of the reactants concentrations of reactants А. В. presence of a catalyst surface area of reactants reaction progress C. D. Е.

47. Which of the following affects the activation energy of a reaction? temperature of the reactants concentrations of reactants А. В. presence of a catalyst surface area of reactants reaction progress C. D. Е.

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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kindly answer the following question below, choose the best answer. thank u so much
47. Which of the following affects the activation energy of a reaction? А. В. С. temperature of the reactants concentrations of reactants presence of a catalyst surface area of reactants D. reaction progress 48. A catalyst accelerates a reaction because Е. А. it increases the number of molecules with energy equal to or greater than the activation energy. В. it lowers the activation energy for the reaction. С. it increases the number of collisions between molecules. it increases the temperature of the molecules in the reaction. it supplies energy to reactant molecules. D. Е. 49. When a catalyst is added to a reaction mixture, it A. increases the rate of collisions between reactant molecules. В. provides reactant molecules with more energy. slows down the rate of the back reaction. provides a new pathway (mechanism) for the reaction. does none of these. C. D. E.
Transcribed Image Text:47. Which of the following affects the activation energy of a reaction? А. В. С. temperature of the reactants concentrations of reactants presence of a catalyst surface area of reactants D. reaction progress 48. A catalyst accelerates a reaction because Е. А. it increases the number of molecules with energy equal to or greater than the activation energy. В. it lowers the activation energy for the reaction. С. it increases the number of collisions between molecules. it increases the temperature of the molecules in the reaction. it supplies energy to reactant molecules. D. Е. 49. When a catalyst is added to a reaction mixture, it A. increases the rate of collisions between reactant molecules. В. provides reactant molecules with more energy. slows down the rate of the back reaction. provides a new pathway (mechanism) for the reaction. does none of these. C. D. E.
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