Is molecularity and order of reaction same for an elementary?

Elementary reactions have same value of order and molecularity.

When order and molecularity of a reaction is same?

Molecularity of the slowest step involved in a complex reaction is the same as the order of the reaction. However, order and molecularity are the same for an elementary reaction.

Is molecularity and order of reaction always equal?

Order and molecularity of a reaction are always equal.

Why molecularity is applicable only for elementary reactions and order is applicable for elementary as well as complex reactions?

Molecularity refers to how many reactant molecules are involved in reactions. Hence, the molecularity of each elementary reaction is fixed. The slowest step in a complex reaction determines the rate of the overall reaction. Hence, the order of the reaction is applicable for both; elementary and complex reactions.

What is the relationship between molecularity and order in an elementary step?

Molecularity means number of concentration terms involved in RDS (rate determining step). Order is the sum of the power of the concentration terms present in RDS.

Is order and molecularity same?

Solution: Order and molecularity can be same only for elementary reaction and it is different for complex reaction. Order is determined experimentally and molecularity is the sum of the stoichiometric coefficient of rate-determining elementary step. Hence, Option “E” is the correct answer.

What is the relation between order and molecularity?

Molecularity	Order
It represents the number of the reactant molecules taking part in the elementary reaction.	It represents the sum of the exponents to which the concentration term in the rate law are raised.

Can molecularity and order be equal?

The order and the molecularity will be the same when the reaction is an elementary process, ie it occurs exactly as written. So, if the reaction A + B = C + D is an elementary process, one molecule of A collides with one molecule of B to give one molecule of C and one molecule of D.

How order of reaction and molecularity differ towards a complex reaction?

Differences between order of the reaction and molecularity is as shown below….Complete answer:

Order of the reaction	Molecularity
– It is applicable to elementary as well as complex reactions.	– It is only applicable to elementary reactions. For complex reactions, it has no meaning.

How do order and molecularity of a reaction become equal?

For order and molecularity of a reaction to become equal, the reaction must be elementary reactions. For example, consider the below reaction: The order of reaction is the sum of the coefficient of rate equation. Few things to know about the elementary reaction:

How do you find the Order of reaction?

In order to obtain the reaction order, the rate expression of the reaction in question must be obtained. The molecularity of a reaction is defined as the number of reacting molecules which collide simultaneously to bring about a chemical reaction.

Why are reactions of higher molecularity rare in nature?

Reactions of higher molecularity (molecularity > 3) are rare. This is because a reaction takes place by collision between reactant molecules and as number of reactant molecules i.e. molecularity increases the chance of their coming together and colliding simultaneously decreases.

Can molecularity of a reaction be fractional?

Ans: Molecularity of the reaction is the number of atoms, ions, or molecules that collide simultaneously to result in a chemical reaction. The atoms, ions, or molecules cannot react as a fraction. Therefore, molecularity cannot be fractional Q.5.