Answer:
Rate = k [OH][H2]
Step-by-step explanation:
Reaction mechanism gives the elementary steps for the production of products by the reactants.
Obtain the overall reaction by combining the first step and the second together;
OH + H2 ----------> H + H2OOH +H2
H + H2OOH + H2 ----------> H + H20
The overall reaction is therefore;
OH + H2 -----------> H + H20
The rate for the elementary step of the reaction is therefore
Rate = k[OH][H2]