The oxidation of iodide ions by arsenic acid in aqueous solution occurs according to the reaction eq

The oxidation of iodide ions by arsenic acid in aqueous solution occurs according to the reaction equation shown below:

A. 1

B. 2

C. 3

D. 5

Solution: The order with respect to each reactant can be found in the rate law as the power of the reactant.

For example, Rate= k[A]^2 is second order with respect to A.

Now, let's go back to our problem. Since I- is to the power of 1 in the rate law given, Choice A must be the correct answer choice.