The Rate Law expresses the rate of a reaction in terms of the concentrations of which species?

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Multiple Choice

The Rate Law expresses the rate of a reaction in terms of the concentrations of which species?

The rate at which a reaction proceeds is described by how the rate depends on the concentrations of the species that participate in the reaction, usually the reactants. The rate law is written in terms of the reactant concentrations (for example, rate = k [A]^m [B]^n), with the exponents determined experimentally and reflecting how sensitive the rate is to each reactant’s amount. Products don’t drive the rate, since they’re the outcome, not the inputs. Catalysts can influence the rate by altering the mechanism or the rate constant, but the standard rate law expression uses the concentrations of reactants. For a simple case like A + B → products, a rate law might be rate = k [A][B], showing direct dependence on the reactants’ concentrations.

The rate at which a reaction proceeds is described by how the rate depends on the concentrations of the species that participate in the reaction, usually the reactants. The rate law is written in terms of the reactant concentrations (for example, rate = k [A]^m [B]^n), with the exponents determined experimentally and reflecting how sensitive the rate is to each reactant’s amount. Products don’t drive the rate, since they’re the outcome, not the inputs. Catalysts can influence the rate by altering the mechanism or the rate constant, but the standard rate law expression uses the concentrations of reactants. For a simple case like A + B → products, a rate law might be rate = k [A][B], showing direct dependence on the reactants’ concentrations.

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