I've tried to answer some
-The reaction mechanism for a reaction is as follows…
Step 1 O3 (g) + NO2 (g)→ NO3 (g) + O2 (g) slow
Step 2 NO3 (g) + NO2 (g) → N2O5 (g) fast
a. Write the overall reaction equation.
b. Identify the molecularity of each step.
They are both bimolecular.
c. Identify all that apply: reactants, products, catalysts, [reaction intermediates]
Reactants: O3 (g), NO2 (g), NO3 (g), NO2 (g)
Products: NO3 (g), O2 (g), NO2 (g), N2O5 (g)
Catalysts:
Intermediate: NO3 (g)
d. What is the rate law expression for this mechanism?
Rate= k[O3][NO2]
e. What is the rate with respect to each one of the species int he overall reaction.
To answer part (e) of your question, we need to determine the rate with respect to each species in the overall reaction. Let's look at the overall reaction equation first:
Overall reaction: O3 (g) + NO2 (g) → NO3 (g) + O2 (g) + NO2 (g) + N2O5 (g)
The rate with respect to a particular species tells us how the rate of the reaction changes when the concentration of that species changes, while all other concentrations remain constant.
From the given mechanism, we can see that the first step is a slow step, while the second step is fast. This means that the first step is the rate-determining step.
In the rate-determining step, the rate law expression for the step is directly related to the rate law expression for the overall reaction. In this case, the rate law expression for the first step is:
Rate = k[O3][NO2]
Comparing this to the overall reaction equation, we can see that in the overall reaction, the reactants O3 and NO2 are consumed and the products NO3, O2, NO2, and N2O5 are formed. Therefore, the rate with respect to each species in the overall reaction is as follows:
Rate with respect to O3: -1 (it is consumed in the overall reaction)
Rate with respect to NO2: -2 (it is consumed in the overall reaction)
Rate with respect to NO3: +1 (it is formed in the overall reaction)
Rate with respect to O2: +1 (it is formed in the overall reaction)
Rate with respect to N2O5: +1 (it is formed in the overall reaction)
So, the rate with respect to each species in the overall reaction is -1 for O3 and -2 for NO2, and +1 for NO3, O2, and N2O5.