Chem Module - of the solution and put it in a smaller test...

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Objectives: 1. To follow the kinetic of the of the bleaching of the food coloring agent, Blue #1, in order to determine rate law of this reaction, including all unknown in the rate law. 2. To work out a strategy to reach this goal. 3. To design a procedure to implement this strategy. Procedure: Part 1: 1. To determine the K and the order of Blue #1 and NaOCL, you must use the swamping technique. Take 5 drops of Blue #1 in a 100ml volumetric flask and fill to the 100ml line with deionized water. After you determine the wavelength, which you will use on the machine. 2. Take five test tubes and put 20ml of the Blue #1 solution in each and add 3ml, 2ml, 1ml, .5ml and .25ml of NaOCL. See which one the rate of the reaction is not too fast and not too slow. Then make another solution of Blue #1. 3. Put another 20ml of Blue #1 in a test tube and add the amount NaOCl which you determined fit from the five test tubes. For example .5ml of NaOCL. Take some
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Unformatted text preview: of the solution and put it in a smaller test tube. 4. After quickly calibrate the machine and adjust the wavelength to the one determined. Then record the time and put the test tube in and measure the concentration. Take out and repeat every minute, till the concentration is 75% of the original recorded. Record all data. 5. Once you have the data, plot three graphs, concentration verse time, LN of concentration vs time and 1 over the concentration vs. time. Then you can determine the order of Blue #1. The slope of the graph is the K of the reaction. Part 2 1. Remake the same solution of Blue #1, by diluting it in deionized water. But this time you will take of the NaOCL used in the first and add it to 20ml of Blue #1. Then you use the same wave length determined in the first part. Then repeat the steps, and use the recorded values to create three new graphs to determine the order of NaOCL....
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This note was uploaded on 11/15/2010 for the course CHEE 638 taught by Professor Hampton during the Spring '10 term at MO Southern.

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