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Unformatted text preview: Approximate concentration of stock solution: 870 mg/L Group # Vol. stock Vol. octanol Measured Day of Notes soln. used used Absorbance absorbance (mL) (mL) of aq. phase reading ===== ===== ===== ===== ===== ===== 1 95.0 5.0 0.42 Tues A 0.61 Tues A 0.21 Wed B 2 90.0 10.0 0.48 Tues B 0.18 Wed B 3 85.0 15.0 0.42 Tues B 0.110 Wed B NOTES: A Group 1 took a measurement with a cuvette that wasn't very full, and got an absorbance of 0.424. Then, they filled the cuvette further, and re-measured absorbance, getting 0.609. B After letting the separatory funnels sit undisturbed for about 22 hrs, the separation was much better. The aqueous phase was still a little bit cloudy, but it was clearly better than it had been during the lab session on Tuesday. Therefore the absorbances measured on Wednesday should be more representative of equilibrium conditions than the values measured on Tuesday....
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This note was uploaded on 06/12/2011 for the course ENV 6002 taught by Professor Staff during the Fall '08 term at University of South Florida - Tampa.
- Fall '08