Question

give different between molecularity and order of reaction

Answer 1

Order of reaction is the sum of the exponents to which the concentration terms of the reactants are raised. ...Molecularity is the number of molecules/ atoms participants in a reaction. It is theoretical concept.Order of the reaction is sum of powers of concentration of reactants on which the rate of reaction depends.

Answer 2

order of reaction is a experimental parameter molecularity of the reaction is a theoretical parameter

the total no of conc variables which effect the rate of reaction is called order of reaction

the total number of chemical species involved in the reaction leading to the formation of product is called molecularity of the reaction

reaction order can have small integral half integral and zero values in order of reaction

molecularity of the reaction can only take small integral values in molecularity of reaction