For the reaction in which A and B react to form C, the following initial rate data were obtained. What is the rate law for the reaction?

Question

For the reaction in which A and B react to form C, the following initial rate data were obtained.  What is the rate law for the reaction?

Quizplus · Accepted Answer

The rate law can be determined by comparing the initial rates when the concentrations of each reactant are changed systematically while keeping other conditions constant. From the given data, the only change was in the initial concentration of B, while the initial concentration of A was kept constant. Therefore, the rate law can be written as Rate = k[A][B]^0.5 (because the initial rate doubles when the initial concentration of B is doubled). Simplifying this equation gives us Rate = k[A][B]. Therefore, the best choice is C.

For the Reaction in Which a and B React to Form