1. Experiment 29 Use the experiment in the supplemental packet, not the lab manual, for this experiment CHE1181

2. In Lab Work in groups of 4 Do one trial run with everyone participating to observe the reaction and the data acquisition Divide the various trials among all four lab partners; exchange data CHE1182

3. Table 1 (The only table with data) Volumes are given in the lab procedure; use a graduated cylinder to measure reactants The time for a completed trial should be written in units of seconds (whole numbers) Timers are provided in lab, or you can use your own timer CHE1183

4. Table 2 Concentrations need to be calculated because the concentrated solutions are diluted when the reactants are mixed together Use the dilution equation (chapter 4 text) (Mc) (Vc) = (Md) (Vd) The rate of reaction is: Rxn rate =(-)(1/a)(Δ[A]/Δt) = (-)(1/b)(Δ[B]/Δt) (Text, chp 14) rxn rate = (-)(1/1)(Δ[I 2 ]) / (Δt) (This is simplified in the table) CHE1184

5. Orders and k 1.Determine the exponents in the rate law equation: Rxn rate = k[acetone] m [H + ] p [I 2 ] n 2.Determine the value of k, the rate constant, for each trial and the average k value 3.Calculate the reaction rate by using the completed equation and trial 5 data: Rxn rate = k[acetone] m [H + ] p [I 2 ] n CHE1185