Question

A chemistry student needs to determine the rate law for the reaction between hydrogen peroxide and iodide ion in the presence of an acid catalyst. Using experimental data, what is the order of the reaction with respect to hydrogen peroxide, iodide ion, and acid? Write the rate law equation for this reaction.

Answer 1

To determine the order of the reaction with respect to hydrogen peroxide, iodide ion, and acid, the student would need to perform a series of experiments, varying the concentrations of each reactant while keeping the other two constant. By analyzing the data, the student can determine the relationship between the rate of the reaction and the concentration of each reactant.Let's assume the student has performed these experiments and found the following orders for each reactant:- Hydrogen peroxide  H2O2 : 1st order- Iodide ion  I- : 1st order- Acid  H+ : 2nd orderWith this information, we can write the rate law equation for this reaction:Rate = k[H2O2]^1[I-]^1[H+]^2Simplified, this becomes:Rate = k[H2O2][I-][H+]^2Where Rate is the rate of the reaction, k is the rate constant, and [H2O2], [I-], and [H+] are the concentrations of hydrogen peroxide, iodide ion, and acid, respectively.