1.

Nitricoxide, NO reacts with oxygen to produce nitrogen dioxide : 2" NO"(g)+"O"_(2)(g)to2"NO"_(2)(g) What is the predicted rate law, if the mechanism is : "NO"+"O"_(2)overset(k)iff"NO"_(3)("fast") "NO"_(2)+"NO"overset(k_(1))to"NO"_(2)+"NO"_(2)("slow")

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Solution :From the slow step, RATE `=k_(1)[NO_(3)][NO]""…(i)`
From fast step, EQM. CONST. `k=([NO_(3)])/([NO][O_(2)])""…(ii)`
Substituting the value of `[NO_(3)]" from (ii) in (i), we get: Rate"=k'[NO]^(2)[O_(2)]`


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