How is the effect of concentration changes on the reaction rate seen in the rate law?A.The rate law does not show how concentration changes would affect the reaction rate.B.A change in concentration of a reactant would change the exponent of that reactant.C.The effect of concentration changes on the rate constant affects the reaction rate.D.The exponents determine how much concentration changes affect the reaction rate.SUBMITarrow_backPREVIOUS
Question
How is the effect of concentration changes on the reaction rate seen in the rate law?A.The rate law does not show how concentration changes would affect the reaction rate.B.A change in concentration of a reactant would change the exponent of that reactant.C.The effect of concentration changes on the rate constant affects the reaction rate.D.The exponents determine how much concentration changes affect the reaction rate.SUBMITarrow_backPREVIOUS
Solution
The effect of concentration changes on the reaction rate is seen in the rate law through the exponents in the rate law equation. The rate law for a reaction is generally expressed as Rate = k[A]^m[B]^n, where A and B are reactants, k is the rate constant, and m and n are the orders of the reaction with respect to A and B, respectively.
These exponents (m and n) determine how much a change in concentration of a reactant will affect the reaction rate. For example, if m is 1, the reaction is first order with respect to A, and a doubling of the concentration of A will double the reaction rate. If m is 2, the reaction is second order with respect to A, and a doubling of the concentration of A will quadruple the reaction rate.
So, the correct answer is D. The exponents determine how much concentration changes affect the reaction rate.
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