1. The problem statement, all variables and given/known data Due to formatting problems, I have attached the question below. The attempt at the solution: I am not sure how to deal with the hydroxide ion since it is written above the arrow. I believe that this signifies a species not included in the overall reaction but is necessary for the reaction to proceed? An intermediate maybe? Therefore, should the hydroxide ion be in the rate law? Using trials 1 and 2 where the concentration of OCI- and OH- is held constant, I have determined that the reaction is first order with respect to [I-]. However, there are no trials where the concentration of OCI- changes and the other two are held constant. I am not sure how to proceed from here. Can anyone provide some guidance. Thanks. All help is very much appreciated.