A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?
Correct answer: B. Equal to or more than
- A. Less than
- B. Equal to or more than
- C. More than
- D. Equal to
Explanation
Reaction occurs when molecular energy reaches or exceeds the activation-energy barrier. Equal energy represents the threshold, while greater energy also permits reaction, so “equal to or more than” is the complete condition.
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