March11_2005_2pp

March11_2005_2pp - March 11, 2005 Exam #2 Next Wednesday (7...

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1 March 11, 2005 ¾ Exam #2 ¾ Next Wednesday (7 pm, B104) ¾ Review Session: Sunday, 7pm, B203 ¾ Info Page now online ! ¾ Prob Set #3 Solutions ! ¾ With Real Blueberry Bursts (artificially flavored)! ¾ Office Hours modifications this week ¾ Friday: 1:15 – 1:45 pm (A223 Cook) 2 Qualitative Analysis ± Group Frequencies:
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3 More Qual Analysis ± Must have spectrum of a pure compound ± Use group frequencies as a guide ± Use correlation chart for more compound specific functional group analysis ± Use computerized spectral search engines ± Use IR assignments in conjunction with other info (e.g., chemical, physical, spectroscopic) 4 Quantitative Analysis ± The Good Side: -Almost all compounds absorb in IR -solids, liquids and gases are all accessible ± The Problems: ± Poor sensistivity and short cell pathlengths mandate relatively high solution concentrations (1-2% or more) results in Beer’s Law deviations ± Narrow absorption bands and complex spectra (with overlapping bands) can cause polychromatic errors
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March11_2005_2pp - March 11, 2005 Exam #2 Next Wednesday (7...

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