test6 - (45 points) You studied the reaction of hydrogen...

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Sheet1 Page 1 (45 points) You studied the reaction of hydrogen peroxide in the Five Anion Experiment and 3 I-(aq) + H2O2(aq) + 2 H+(aq) = I3-(aq) + 2 H2O(aq) An inorganic chemist measured the initial rate of appearance of I3- as a function of concent run[I-] (M)[H2O2] (M)[H+] (M)d[I3-]/dt (M/s) 10.001000.01000.01000.000040 20.000500.01000.01000.000020 30.000500.02000.01000.000040 40.001000.01000.02000.000080 Determine the rate law for the reaction. Show how you determined the result. Determine the time rate of change of the concentration of iodide, i.e. d[I-]/dt, under condi Compare runs 1 and 2. The rate is halved when the iodide concentration is halved at con Compare runs 2 and 3. The rate is doubled when the peroxide concentration is doubled a Compare runs 1 and 4. The rate is doubled when the acid concentration is doubled at co Put it all together. Rate = -d[I3-]/dt = k[I-][H+][H2O2] Use run 1, k = 0.000040/(0.00100)(0.0100)(0.0100)) = 400 M-2s-1. From the stoichiometric equation, (-1/3)d[I -]/dt = (1/1)d[I3-]/dt = Rate.
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This note was uploaded on 07/21/2011 for the course CHEM 111 taught by Professor Sawyers during the Spring '11 term at Virginia College.

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test6 - (45 points) You studied the reaction of hydrogen...

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