Experiment 7 Chromatographic separations

Experiment 7 Chromatographic separations - 7 or Fe (III) in...

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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 0.000 0.050 0.100 0.150 0.200 0.250 0.300 Chromatogram: Absorbance of Fe (III) Ion and Dichromate Ion Column B Column B Cuvette Number Absorbance
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Cuvette Number Absorbance used for measuring absorbance λ Moles of Cr2O7 or Fe (III) in collection well Fe-1 0.007 478 0 0 Fe-2 0.009 478 0 0 Fe-3 0.010 478 0 0 Fe-4 0.010 478 0 0 Fe-5 0.046 478 0 0 Fe-6 0.116 478 0 0 Fe-7 0.151 478 0 0 Fe-8 0.170 478 0 0 Fe-9 0.187 478 0 0 Fe-10 0.214 478 0 0 Fe-11 0.264 478 0 0 Fe-12 0.256 478 0 0 Fe-13 0.239 478 0 0 Fe-14 0.202 478 0 0 Fe-15 0.143 478 0 0 Fe-16 0.114 478 0 0 Fe-17 0.100 478 0 0 Fe-18 0.072 478 0 0 Fe-19 0.057 478 0 0 Fe-20 0.032 478 0 0 Cr-1 0.029 447 0 0 Cr-2 0.031 447 0 0 Cr-3 0.067 447 0 0 Cr-4 0.013 447 0 0 Cr-5 0.002 447 0 0 Cr-6 0.000 447 0 0 Concentration of Cr2O
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Unformatted text preview: 7 or Fe (III) in collection well 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 f(x) = 1071.65x + 0.02 Absorbance vs. Molarity of std. Fe (III) solutions Fe (III) Concentration (M) Absorbance at max λ Vol. of std. Fe (III) soln used (mL) Fe(III) concentration in 10-ml vol. flask (M) 0.2 0.4 0.6 0.8 0.11 0.21 0.29 0.38 Absorbance at max λ...
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This lab report was uploaded on 04/13/2008 for the course CHEM 152 taught by Professor Mao during the Spring '08 term at Washington University in St. Louis.

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Experiment 7 Chromatographic separations - 7 or Fe (III) in...

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