At a certain temperature, the reaction between and to form is fast, while that between and is slow. It may be concluded that

Question

At a certain temperature, the reaction between $NO$ and $O_2$ to form $NO_2$ is fast, while that between $CO$ and $O_2$ is slow. It may be concluded that

Prashant Kotian · Accepted Answer

Correct answer: C. The rate of a chemical reaction is inversely related to its activation energy: reactions with lower activation energy barriers proceed at faster rates. Since the oxidation of is fast while the oxidation of is slow at the same temperature, it can be concluded that the activation energy for the reaction 2 + -> 2 is less than that for 2 + -> 2.

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