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The Oxidation of Iodide Ions by Hydrogen Peroxide

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Introduction

The Oxidation of Iodide Ions by Hydrogen Peroxide September 15, 2009 1. Objectives: * To determine the rate law. * To determine the activation energy. 2. Experimental Methods: 2.1 General Procedure: The procedure was followed by the lab manual, Principles of Chemistry, CHEM 1211L & CHEM 1212L Laboratory Experiments, A Project Oriented Approach, 4th Edition, 2009-Fall, p.137-150. ...read more.

Middle

5 363 540 426 443 5 5 7.5 843 800 822 6 5 10 710 570 519 600 7 5 12.5 611 463 537 Table 1: Class Data 3.1 Data Table (Cont.) Raw Data Rate vs Temperature Stock Concentrations Temp time 23 443 [S2O3] 4.00E-04 60 136 [H2O2] 0.04 5 1277 [I-] 0.04 4 2372 Table 2: Raw Data & Stock Concentrations Reaction [H2O2] (10-3 M) ...read more.

Conclusion

Rate (10-8 M/s) ln([I-] ln(Rate) 1 4.0 7.1 -5.5 -16.5 5 6.0 9.7 -5.1 -16.1 6 8.0 13.3 -4.8 -15.8 7 10.0 14.9 -4.6 -15.7 Order 1 TEMPERATURE DEPENDENCE T(K) Rate (10-8 M/s) k 1000/T ln(k) 296 18.1 564334.1 3.4 13.2 333 58.8 1838235.3 3.0 14.4 278 6.3 195771.3 3.6 12.2 277 3.4 105396.3 3.6 11.6 [H2O2] 0.008 [I] 0.004 R = k[H2O2][I-] 3.2 Graphs ?? ?? ?? ?? ...read more.

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