The thermal decomposition of nitryl chloride is proposed to occur by the followi

Question

The thermal decomposition of nitryl chloride is proposed to occur by the following mechanism: tep slow: NO2CINO2+ CI step 2 fast: CI+NO CNO2 + Ch (1) What is the equation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank. 2) Which species acts as a catalyst? Enter formula. If none, leave box blank: (3) Which species acts as a reaction intermediate? Enter formula. If none, leave box blank: (4) Complete the rate law for the overall reaction that is consistent with this mechanism (Use the form klA]"[B]"... . where'l' is understood (so don't write it) for m, n etc.) Rate

Explanation / Answer

1)

overall reaction is obtained by adding both the steps

2 NO2Cl —>2 NO2 + Cl2

2)

Catalyst should be part of reactant in step 1 and product is step 2

There is no catalyst here

3)

Cl is intermediate because it is produced in step 1 and used up in step 2

4)

rate depends on slowest step

Here 1st step is slowest

So, rate law is

rate = k [NO2Cl]

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