In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) ?
Correct answer: C. A + N
- A. A
- B. N
- C. A + N
- D. A - N
Explanation
Threshold energy is the energy level required to reach the activated state, measured from the zero-energy reference. If reactants have normal energy N and need activation energy A, the threshold energy is N + A.
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