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

The order of a reaction can be fractional number

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Order of a reaction is experimentally determined quantity

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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

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

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Solution

The correct option is 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
The sum of powers of the concentration of the reactants in the rate law expression is called the order of that chemical reaction.
Order of reaction may or may not be equal to the sum of stoichiometric coefficients.

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Similar questions

Which of the following statements is not correct about order of a reaction ?
(a) The order of a reaction can be fractional number
(b) Order of a reaction is experimentally determined quantity
(c) The order of 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 the rate law expression.

Q. Consider the following statements:
1. The rate of reaction is always proportional to the concentration of reactants.
2. The order of an elementary chemical reaction step can be determined by examining its stoichiometry.
3. The first order reactions follow an exponential time course.
Of these statements:

Q. The rate of loss of reactants is equal to the rate of formation of products in a chemical system.
A rate law for a reaction can be determined by which of the following?

Q. Assertion :For the reaction

C H C l_{3} + C l_{2} \to C C l_{4} + H C l

R a t e = k [C H C l_{3}] [C l_{2}]^{1 / 2}

. Reason: Rate of reaction is always equal to the sum of the stoichiometric coefficients of the reacting species in a balanced chemical equation.

Q. The law of mass action states that, at a given temperature, the rate of a chemical reaction is directly proportional to the product of the molar concentrations of the reactants with their powers raised to their stoichiometric coefficient. The molar concentration of the reactant is also known as the:

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