Home Chemistry Chemical Kinetics NCERT Examplar Which of the following statements is not cor…
Chemistry Chemical Kinetics NCERT Examplar Single Correct MCQ
Published on: August 14, 2026

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

A
The order of a reaction can be a fractional number
B
Order of a reaction is experimentally determined quantity
C
The order of a reaction is always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation for a reaction
D
The order of a reaction is the sum of the powers of molar concentration of the reactants in rate law expression

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The correct answer is:
C

Out of the given four statements, option is not correct.Order of reaction is equal to the

sum of powers of concentration of the reactants in rate law expression. For any chemical reaction:

Order of reaction is not always equal to sum of the stoichiometric coefficients of reactants in the balanced chemical equation. For of reaction it may or may not be equal to sum of stoichiometric coefficient of reactants. Order of reaction can be a fraction also.

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