What is the overall order of the following reaction, given the rate law? NO (g) + O3 (g) â NO2 (g) + O2 (g) Rate = k[NO][03] A) 1st order B) 2nd order C) 3rd order D) Zero order

The correct option is: B) 2nd order

Explanation:

The rate law equation of a chemical reaction is a mathematical expression which expresses the relationship of the rate of the chemical reaction with concentration of reactants. The overall order of the reaction is equal to the sum of orders with respect to all the reactants in the rate law equation.

The given reaction: NO (g) + O₃ (g) → NO₂ (g) + O₂ (g)

Rate = k[NO][O₃]

Therefore, the given chemical reaction is second order.