1. 8/8 points Last Response | Show Details All Responses Notes This question addresses safety issues in the Kinetics experiment. Select the correct response in each blank. The only hazardous chemical listed in this chemical is sodium persulfate . It is listed as an oxidizing agent , which can supply its own oxygen and react violently . In this experiment, it is present as a dilute solution and can be handled safely with other aqueous solutions. 2. 2.25/2.25 points Last Response | Show Details All Responses Notes The waste in the Kinetics experiment should be (_) saved for next week's experiment. (_) kept in a labelled beaker at the bench, the dumped in the waste container on the side shelf at the end of lab. (_) thrown in the trash can. (o) flushed down the sink with water. 3. 2.25/2.25 points Last Response | Show Details All Responses Notes For which reaction are we trying to find the rate law? (_) I2 + starch indicator blue-black product (_) S2O82- + 10 H1+ S2O32- + 5 H2O (o) 2 I1- + S2O82- I2 + 2 SO42- (_) I2 + 2 S2O32- 2 I1- + S4O62- (_) S2O32- + 5 H2O 2 SO42- + 10 H1+ (_) 2 S2O82- + 20 H1+ S4O62- + 10 H2O 4. 4.5/4.5 points Last Response | Show Details All Responses Notes Consider the following reaction:Cl2 + 2 Br1- 2 Cl1- + Br2 a. If 100 Cl2 molecules react in a second, how many Br1- ions react in a second? (_) 50 (o) 200 (_) 400 (_) 100 (_) 25b. Compared to the rate at which Br1- ions react, the rate at which Cl2 molecules react is (o) half as large (_) four times as large (_) one fourth as large (_) twice as large (_) the same 5. 8/8 points Last Response | Show Details All Responses Notes In the method of initial rates that will be used in the experiment, you will measure the time it takes for the first small percentage of the reaction to occur. In our reacting system, this corresponds to the time it takes for the thiosulfate ion (S2O32-) to be used up (see background section of experiment for details). For thisto work, the amount of thiosulfate anion should be small relative to the amount of persulfate anion. In order to verify this, use the amounts of solution suggested for Run #1 in Data Table A and find: mmol of S2O32- .050 mmol mmol of S2O82- 2.00 mmol molar ratio of S2O32- relative to S2O82-
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