Chemical Kinetics - Chemical Kinetics Chem 104B Abstract:...

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Chemical Kinetics Chem 104B Abstract: With the use of absorbance spectroscopy and the Beer-Lambert law equation determine the order of the reaction between a bleaching reagent, NaOCl, and the food dye, yellow sunset #6. Introduction: Chemical kinetics is the understanding of how chemical reactions occur. This lab will be focusing on chemical reactions in which a bleaching reagent will change the chemical make-up of food dyes. This is done by using a bleaching regent: Sodium
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hypochorite, NaOCl, to remove the color from the dyes. This is often done by breaking a double bond within the food dye molecule. Once the bleach breaks the bonds, the reaction time of the abosrptivity of the dye rapidly decreases. To determine the concentrations as time progress the Beer’s Law equation will be used, but this time solving for the concentration. Beer’s Law states A = εbc were A is the absorbance; ε is the molar absorptivity, b the cuvette length, and c the concentration, to determine the molar absorptivity. This experiments main objective is to determine the order of the reaction and to generate a rate equation. This will be achieved by analyzing reaction
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This note was uploaded on 04/02/2008 for the course CHEM 104B taught by Professor Staff during the Spring '07 term at University of Arizona- Tucson.

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Chemical Kinetics - Chemical Kinetics Chem 104B Abstract:...

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