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Unformatted text preview: 1-ions react in a second? 200 100 50 400 25 b. Compared to the rate at which Br 1-ions react, the rate at which Cl 2 molecules react is one fourth as large half as large the same twice as large four times as large 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 (S 2 O 3 2-) to be used up (see background section of experiment for details). For this to 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 S 2 O 3 2-.050 mmol mmol of S 2 O 8 2-2.00 mmol molar ratio of S 2 O 3 2-relative to S 2 O 8 2-.025...
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- Spring '09