Consider the reaction and the rate law. 2 cap o sub 3 rightarrow 3 cap o sub 2 cap r is equal to k times open bracket cap o sub 3 close bracket squared What is the overall order of the reactants in this rate law?

The overall order is the sum of the exponents of the reactant concentrations in the rate law. Here, rate = k[O₃]², so the only reactant concentration has exponent 2. The reaction is therefore second order overall, choice C.

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