Define ‘order of a reaction’.

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Nazia Khanum

The order of a reaction refers to the mathematical expression that describes how the rate of a chemical reaction changes with respect to the concentration of reactants. It is determined experimentally and may or may not correspond to the stoichiometric coefficients in the balanced chemical equation...
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The order of a reaction refers to the mathematical expression that describes how the rate of a chemical reaction changes with respect to the concentration of reactants. It is determined experimentally and may or may not correspond to the stoichiometric coefficients in the balanced chemical equation of the reaction. In a general form, for a reaction: aA+bB→cC+dDaA+bB→cC+dD where AA, BB, CC, and DD are reactants or products, and aa, bb, cc, and dd are their respective stoichiometric coefficients, the rate of the reaction can be expressed as: Rate=k[A]m[B]nRate=k[A]m[B]n where: kk is the rate constant, [A][A] and [B][B] are the concentrations of reactants A and B, respectively, mm and nn are the order of reaction with respect to A and B, respectively. The overall order of the reaction is the sum of the individual orders (m+nm+n). The orders can be zero, first, second, etc., and they represent how the rate of the reaction is influenced by changes in the concentration of reactants. Determining the order of a reaction is crucial for understanding its kinetics and designing reaction mechanisms. read less
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