Which of the following is not a correct statement ?

Options

A. Reactions where the reactants are not uniformly dispersed are known as heterogeneous reaction
B. Two reactants will react faster when the same reaction is allowed to proceed in a homogeneous manner
C. The rate of a heterogeneous reattion can be increased by agitatining the reaction mixture.
D. None of these

Answer

D

Explanation

The different expression for the rate can be made equivalent by dividing the rate expression by the corresponding stoichiometric present in the balanced chemical equation.
Rate of a chemical reaction is always positive. The minus sign along with the reactant terms is used to show that the active mass of the reactants is decreasing with time.