Which of the following statements is not correct about the order of a reaction?
1. | The order of a reaction can be a fractional number |
2. | Order of a reaction is experimentally determined quantity |
3. | 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 |
4. | The order of a reaction is the sum of the powers of the molar concentration of the reactants in the rate law expression |
Hint: Order is sum of powers of the concentration of the reactants in the rate law expression
Step 1:
The order of the reaction is equal to the sum of powers of concentration of the reactants in rate law expression.
For any chemical reaction
Step 2:
The order of reaction can be a fraction also. The order of the reaction is not always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation. For a reaction, it may or may not be equal to the sum of the stoichiometric coefficient of reactants.
Out of the given four statements, option (3) is not correct.
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