Refer to the Figure Below

question 84

Multiple Choice

Refer to the figure below. Based on the graph, which statement best describes these chemical reactions?

• A) Addition of a catalyst to a reaction does not affect the equilibrium position of the reaction, but only increases the rate of attainment of equilibrium.
• B) Addition of a catalyst to a reaction speeds up the reaction by decreasing the amount of energy input needed to get over the activation energy barrier.
• C) Addition of heat to a reaction speeds up the reaction by increasing the kinetic energy of reactant molecules, which increases collisions that result in products.
• D) Addition of energy must be made to exergonic reactions in order to allow reactants to achieve the transition state that can then proceed spontaneously to form products.
• E) Addition of energy to an endergonic reaction above that needed to go from reactants to products must be made in order to allow reactants to achieve the transition state.

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