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The figure illustrates the energy states associated with the reaction A + B ↔ C + D. Which of the following represents the activation energy required for the non-enzyme-catalyzed reaction in the figure?
A) a
B) b
C) c
D) d

Question

Use the following information to answer the question below.

The figure illustrates the energy states associated with the reaction A + B ↔ C + D. Which of the following represents the activation energy required for the non-enzyme-catalyzed reaction in the figure?
A) a 
B) b 
C) c 
D) d

Quizplus · Accepted Answer

The activation energy is the energy difference between the reactants and the transition state. In this figure, the activation energy is represented by the peak between the reactants (A+B) and the transition state (TS). The highest peak in the figure is represented by peak C, so the correct answer is C.

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