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Question
Which of the following statements is not correct about order of a reaction.
Options
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.
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Solution
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.
Explanation:
In rate law expression, the order of reaction is equal to the sum of the power of concentration of the reactants.
\[\ce{xA + yB -> zC}\]
r = k(A)x (B)y
Order x + y
The order of the reactions can also be a fraction. In a balanced chemical equation, the order of reaction may or may not be equal to the total of the stoichiometric coefficient of the reactants.
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