The following set of data was obtained by the method of initial rates for the reaction: S₂O₈^2-(aq) + 3 I^-(aq) → 2 SO₄^2-(aq) + I₃^-(aq)
What is the rate law for the reaction?

Question

The following set of data was obtained by the method of initial rates for the reaction: S₂O₈^2-(aq)+ 3 I^-(aq)→ 2 SO₄^2-(aq)+ I₃^-(aq) What is the rate law for the reaction?

Quizplus · Accepted Answer

The rate law is determined by the method of initial rates, which involves comparing the initial rates of the reaction at different concentrations of the reactants. From the given data, we can infer that the initial rate depends on the concentrations of [S₂O₈^2-] and [I^-]. Therefore, the correct rate law should include both of these reactants to the first power. The other reactants, ⁵ and ², do not affect the initial rate of the reaction and are not included in the rate law. Therefore, the only correct choice is A.

The Following Set of Data Was Obtained by the Method