Q36 of 66 Page 55

For which type of reactions, order and molecularity have the same value?

For an elementary reaction, order is same as molecularity. Elementary reactions are those reactions which occur in a single step.


Suppose there are 2 reactants A and B which form a product C. Then


A+B → C


Rate is determined by,


Rate = k[A]1[B]1


Order of the reaction is 2.


Molecularity of the reaction is also 2 as there are total 2 molecules of reactants that are reacting for the formation of a product C.




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