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

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The order of a reaction can be a fractional number

Order of a reaction is experimentally determined quantity

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

The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression

answer is C.

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Detailed Solution

order of a reaction : order of a reaction is equal to the sum of powers of concentration of the reactants in rate law expression.For any chemical reaction, xA+yB⟶ Product Rate =k[A]x[B]y and Order =x+yOrder of a reaction can be a fraction also. It is not always equal to sum of the stoichiometric coefficients of reactants in the balanced chemical equation. For a reaction, it may or may not be equal to sum of stoichiometric coefficient of reactants.

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