rate equation and overall equationWatch this thread
Rate equation or rate law is the expression indicating the relationship between rate of reaction and concentration of reactants. It will be something like Rate = k[H2]^2[O2]But overall equation is the chemical equation representing the reaction. It will be something like2H2 O2 --> 2H2OBoth will be different
The rate equation you gave shows 2 molecules of H2 reacting with one molecule of O2 - this matches the overall equation's stoichiometry. This will imply that the entire reaction is the rate determining step.
have a look at question 5c in this pack of exam qs
5c) How can you tell that H+ acts as a catalyst in this reaction?
the answer is
"Appears in rate equation (1)
does not appear in (stoichiometric / overall) equation (1) "
hope this helps