Question

Write the difference between order and molecularity of a reaction.

Answer 1

Difference between order and molecularity of a reaction-

Order of reaction	Molecularity of reaction
It is defined as the sum of powers of concentration terms in a rate equation.	It is defined as no. of molecules or atoms or ions participating in a rate determining step.
It is an experimental quantity.	It is a theoretical concept.
It varies with a change in temperature.	It is independent of temperature.
It may be a whole number, a fraction or zero.	It is always a whole number.
It is obtained through experimentation and is dependent upon the rate for the overall reaction.	It is obtained from the simple balance chemical equation.