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 reactantsconcentrations of reactantspresence of a catalystsurface area of reactantsD.reaction progress48. A catalyst accelerates a reaction becauseЕ.А.it increases the number of molecules with energy equal to or greater than the activationenergy.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, itA.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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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 for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.50PAE

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Question

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.

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