The reaction between hydrogen gas H2 and iodine gas I2 to form hydrogen iodide gas 2HI can be represented by the following balanced chemical equation:H2 g + I2 g 2HI g The reaction rate of this reaction depends on the concentration of the reactants, as described by the rate law. The rate law for this reaction can be written as:Rate = k[H2]^m[I2]^nwhere Rate is the reaction rate, k is the rate constant, [H2] and [I2] are the concentrations of hydrogen and iodine, respectively, and m and n are the reaction orders with respect to hydrogen and iodine, respectively.The ratio of reactants affects the reaction rate by influencing the concentrations of the reactants in the rate law equation. If the ratio of hydrogen to iodine is increased, the concentration of hydrogen will be higher, and the reaction rate will increase if m > 0. Conversely, if the ratio of iodine to hydrogen is increased, the concentration of iodine will be higher, and the reaction rate will increase if n > 0.In general, for this reaction, the reaction rate will be faster when the concentrations of both reactants are higher. However, the specific effect of the reactant ratio on the reaction rate will depend on the values of m and n, which can be determined experimentally.