Answer:
The molecularity of a reaction represents the number of atoms, molecules, or ions that will interfere with each other for the chemical reaction to occur within a limited time frame. The main differences between order and order of reaction are given below.
|
Molecularity |
Order |
| The number of ions or molecules that take part in the rate-determining step is known as molecularity. | The sum of powers to which the reactant concentrations are raised in the rate law equation is known as the order of the reaction. |
| The molecularity of a reaction is a whole number other than zero. Its values are limited from 1 to 3. | It can either be a whole number or a fraction. Therefore, it can be 0, 1, 2, 3 or even a fraction. |
| The molecularity of the reaction is determined by looking at the reaction mechanism | The order of the reaction is determined by the experimental methods |
| The molecularity of the reaction is obtained by the rate-determining step | The order of the reaction is obtained by the sum of the powers to which the reactant concentrations are raised in the rate law equation |
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