【Daily Question】Theoretical Foundation 2019.4.15

2019-04-15View Original

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Multiple-choice question: If the rate of the reaction 2A + B = 2D can be expressed as: r = -dcA/dt = -dcB/dt = dcD/dt, then the number of molecules involved in the reaction is: ( ) A. Single-molecule B. Bimolecular C. Trimolecular D. Cannot be determined. Answer: D. The number of molecules involved in a reaction is independent of the rate expression. As long as it is an elementary reaction, the number of reaction molecules can be determined from the reaction equation. The reaction equation shown does not indicate whether it is an elementary reaction, so it is impossible to determine the number of reaction molecules. Hint: The answer can be seen in the reply

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【Daily Question】Theoretical Foundation 2019.4.15

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