rate determining

$K = \frac{k_{forward}}{k_{reverse}}$

inlovewithchemistry
Posts: 104
Joined: Fri Sep 28, 2018 12:19 am

rate determining

in deciding which of three steps is the rate determining step given the rate law, do you just match the given rate law to the reactants of one of the steps?
for example
step 1: NO + NO--> N2O2
step 2: N2O2 + H2 --> N2O + H2O
step 3: N2O + H2 --> N2 + H2O

rate= k[NO]^2[H2]

is step two the slow step just because the reactants match the given overall rate law?