Answer to Question #241734 in General Chemistry for TUTU

Question

A possible mechanism for the gas phase reaction of NO and H2 is as follows: Step 1 2NO N2O2 Step 2 N2O2 + H2 N2O + H2O Step 3 N2O + H2 N2 + H2O Which of the following statements concerning this mechanism is not directly supported by the information provided?

Answer 1

Steps involved for the given reaction will be as follows.

Step 1:

(fast)

Rate expression for step 1 is as follows.

Rate = k (NO)²

Step 2:

This step 2 is a slow step. Hence, it is a rate determining step.

Step 3.

(fast)

Here, N₂O₂ is intermediate in nature.

All the steps are bimolecular and it is a second order reaction. Also, there is no catalyst present in this reaction.

Thus, we can conclude that the statement step 1 is the rate determining step, concerning this mechanism is not directly supported by the information provided.