Which one of the following is not the correct statement with respect to order of a reaction?

Options

A. Order can be determined experimentally
B. Order of reaction is equal to sum of the powers of concentration terms in differential form of rate law.
C. Order does not change with change of pressure or termperature.
D. Order cannot be fractional.

Answer

D

Explanation

Out of the given four statements, option (d) is not correct.
Order of reaction is equal to the sum of powers of concentration of the reactants in rate law expression. Order does not change with the change of pressure or temperature.
For any chemical reaction, order can be determined experimentally.
For example, `xA+yB rArr "Product"`
Rate `=k[A]^(x)[B]^(y)`
Order = x + y
Order of reaction can be a fraction also. For a reaction, it may or not be equal to sum of stoichimetric coefficient of reactants.