Can order of reaction be determined theoretically?

Order of reaction can only be experimentally determined.

Can the order of a reaction only be determined by experiment?

Order of reaction can only be experimentally determined. Solution: Order of a reaction with respect to a given substance is defined as the index or exponent to which its concentration term in the rate equation is raised. Reaction orders can be determined only by experiment.

Why is order determined experimentally?

Reason : Order is determined experimentally and molecularity is the sum of the stoichiometric coefficient of rate-determining elementary step.

How do you determine reaction order?

The overall order of the reaction is found by adding up the individual orders. For example, if the reaction is first order with respect to both A and B (a = 1 and b = 1), the overall order is 2.

Which of the following statements is not correct about order of a reaction?

The order of a reaction in the sum of the powers of molar concentration of the reactants in rate law expression. Out of the given four statements , option (c) is not correct. Order of reaction is equal to the sum of power of conentration of the reactants in rate law expression.

Why can rate equations only be determined experimentally?

This implies that the order and the rate equation of a given reaction cannot be reliably deduced from the stoichiometry and must be determined experimentally, since an unknown reaction mechanism could be either elementary or complex.

Which of the following is not a method to determine the order of chemical reaction?

Ostwald dilution law method is not used to find order of reaction.

How is order of reaction obtained experimentally?

Reaction order represents the number of species whose concentration directly affects the rate of reaction. It can be obtained by adding all the exponents of the concentration terms in the rate expression.

Why is order of reaction zero or fractional?

Order of reaction can be zero or fractional as order of reaction is directly related to sum of power of reactants.

Why can’t a reaction be more than 3?

(i) Proper orientation and effective collision of the reactants. (ii) the chances of simultaneous collision with proper orientation between more than 3 species are very rare, so reaction with order greater than 3 are rare. The rate of reaction will become one-fourth of the initial rate of reaction.

Which of the following observation is incorrect about the order of reaction?

1) order can be determined by experiment only. 2) order is not influenced by stoichiometric coefficient of the reactants. 3) order of reaction is the sum of power to the concentration terms of reactants to express the rate of reaction. 4) order of reaction is always a whole number.

What is the relationship between reaction order and rate law?

Once the rate law of a reaction is determined the same law can be used to understand the composition of the reaction mixture completely. In other words, the reaction order is the exponent to which the concentration of the specific species is raised, and it shows to what level the concentration of the species affects the rate of reaction.

What are the different values of Order of reaction?

Different Values of Reaction Order 1 Zero Order Reactions. The rate of reaction is independent of the concentration of the reactants in these reactions. 2 First-Order Reactions. The rates of these reactions depend on the concentration of only one reactant, i.e. 3 Pseudo-First Order Reactions. 4 Second-Order Reaction.

Does the Order of reaction depend on stoichiometric coefficients?

The order of reaction does not depend on the stoichiometric coefficients corresponding to each species in the balanced reaction. The reaction order of a chemical reaction is always defined with the help of reactant concentrations and not with product concentrations.

What is the difference between the Order of reaction and molecularity?

Reaction order is applicable for all types of reaction (elementary or complex) but molecularity is applicable only to elementary reactions. Order of reaction for a complex reaction is given by the slowest step, also known as the rate determining step. Molecularity of the rate determining step is same as the overall order of reaction.