Name: Methods of Determination of Order of Reactions
Uploaded: 2019-07-19
Duration: 2 min 47 s
Description: There are various methods to ascertain the order of reactions. Let’s watch the video and learn some of the important methods for the determination of the ord...

Question

Write short note on order and molecularity of a reaction.

Accepted 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

Write short note on order and molecularity of a reaction.

Important Questions on Chemical Kinetics

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