The rate of a certain reaction is given by the following rate law: rate=kh2i2 use this information to answer the questions below. what is the reaction order in h2? 1 what is the reaction order in i2? 1 what is overall reaction order? 2 at a certain concentration of h2 and i2, the initial rate of reaction is 75.0 m / s. what would the initial rate of the reaction be if the concentration of h2 were halved? round your answer to 3 significant digits. ms the rate of the reaction is measured to be 0.430 m / s when [h2] = 0.71 m and [i2] = 1.8 m. calculate the value of the rate constant. round your answer to 2 significant digits.