The reaction mechanism is given below. elementary step 1 : Br2 ⇋ 2Br fast elementary step 2: H2 + Br à HBr + H slow rate determining step elementary step 3: H + Br2 à HBr + Br fast Overall reaction is H2 + Br2 à 2HBr k1 is the forward reaction rate constant of step 1, k-1 reverse reaction rate constant of step 1, k2 for reaction rate constant of step 2 and k3 for reaction rate constant of step 3. What is the molecularity of step 2? Give the chemical formula of the intermediate(s) in the reaction Deduce the rate law in terms of the reagents for the reaction using the elementary steps.

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