Which of the following os true for an elementary reaction ?

Options

A. Equilibrium constant is not related to the forward and backward reactions
B. The trimolecular reactions are very common
C. The orders in the rate law are not determined by the reaction stoichiometry.
D. The orders in the rate law are determined by the reaction stoichiometry

Answer

D

Explanation

The reaction order for an overall chemical reaction must be determined experimentally. It can't be deduced from the stoichiometric coefficient in the chemical equation for that step.