Q. 125.0( 1 Vote )

Which of the following expressions is correct for the rate of reaction given below?



A.

B.

C.

D.

Answer :

Rate of a reaction is defined as the change in the concentration of the reactant or product in unit time.

Rate= =


Where R is the change in concentration of a reactant in a time interval t and P is the change in concentration of a product in a time interval t.


For such type of a reaction, the rate is given by dividing the rate of appearance or disappearance of product and reactant respectively by their stoichiometric coefficients hence the rate of reaction become,


Rate =


Rate=


Thus option (iii) is correct.

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