The rate of the reaction, 2A + B = products is given by the rate expression rate = k[A]1.5 [B]0.5. If A is 2 molar and B is 100 molar then the order of reaction will be

By BYJU'S Exam Prep

Updated on: September 25th, 2023

If A is 2 molar and B is 100 molar then the order of reaction will be 2.

Any chemical reaction’s order is determined by adding the concentration terms powers in the rate law.
It was calculated experimentally and is independent of the reactants concentration.
The power raised to the concentration word in the rate law expression determines the sequence of the reaction.

We know that

Rate = k[A]^1.5 [B]^0.5

According to the expression

Order = 1.5 + 0.5 = 2

No of the concentrations, the reaction will continue to be second-order.

Table of content

1. The rate of the reaction, 2A + B = products is given by the rate expression rate = k[A]1.5 [B]0.5. If A is 2 molar and B is 100 molar then the order of reaction will be

Reaction Order

The power dependence of rate on the concentration of all reactants can be used to define the sequence of reaction. For instance, the concentration of one species in a first-order reaction determines the reaction’s pace entirely. The following is a list of some properties of a chemical reaction’s reaction order.

The number of species whose concentration directly influences the rate of reaction is represented by the order of reactions.
It can be found by summing all of the exponents in the rate expression for the concentration terms.
The stoichiometric coefficients corresponding to each species in the balanced reaction do not affect the order of the reaction.
Chemical reactions are always defined by the concentrations of the reactants, never by the concentrations of the products.
The order of reaction value can be expressed as an integer or a fraction. Even zero can be a possible value for it.

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