1.

A complex reaction take place in two steps (i) NO (g) + O3 (g) \(\longrightarrow \) NO3 (g) + O (g)(ii) NO3 (g) + O (g) \(\longrightarrow \) NO2 (g) + O2 (g) The predicted rate law is rate = k [NO] [03]. Identify the rate determining step. Write the overall reaction. Which is the reaction inter mediate? Why?

Answer»

NO (g) + O3 (g) \(\longrightarrow \) NO3 (g) + O (g)  ..........(i)

NO3 (g) + O (g) \(\longrightarrow \) NO2 (g) + O2 (g)  ..........(ii)

As given,

rate of reaction = K [NO] [O3]

it means, rate of reaction depends on the only (concentration) or partial pressure of NO and O3.

Therefore, the first reaction is a rate determining step.

On adding equation (i) and (ii) we get overall reaction.

NO (g) + O3 (g) \(\longrightarrow \) NO2 (g) + O2 (g) 

And reaction intermediate are NO3 (g) + O (g)



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