The formation of small amounts of nitric oxide No, in automobile engines is the

Question

The formation of small amounts of nitric oxide No, in automobile engines is the first step in the formation of smog. Nitric oxide is readily oxidized to nitrogen dioxide by the reaction: 2 NO on 2, NO2 The following data was collected in an experimental study of the rate of the above reaction. Initial concentration (mole/L) Rate of NO2 formation (mole/L s NO 3.804 1.406 8.224 ii) 1.902 1.406 1.028 iii) 1.902 0.703 0.514 (a) Using the table of above, calculate and sHow How you determined the appropriate rate law for the above reaction.

Explanation / Answer

see experiment 2 and 1:

[NO] doubles

[O2] is constant

rate

so, oder of NO is 3

see experiment 3 and 2:

[NO] is constant

[O2] doubles

rate doubles

so, oder of O2 is 1

The rate law hence will be:

rate = k*[NO]^3*[O2]

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