Which of the following characterizes only the first of the e

Which of the following characterizes only the first of the elementary steps shown below? D + D Products A + D Products Rate law of the form: Rate kD]2 Doubling the concentration of D doubles the rate Molecularity of 2 Classified as bimolecular

Solution

First elementary reaction step is shown by

Rate =K[D]² because while writing rate law for elementary reaction we consider that order of reaction is equal to molecules of reactant raised to the power of their stoichiometric coefficent.

So doubling concentration of D makes rate 4 times

Molecularity is 1 because single molecule is itself colliding and is unimolecular as single molecule is only involved for first elementary reaction

option 1 is correct