LAB 2 Materials

LAB 2 Materials - Pre-Lab Assignment CHAPTER-2...

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1 Pre-Lab Assignment CHAPTER-2 Characterization of Organic Compounds-I Date _____________ Section Number ________________ Name ______________________ 1. Purpose (1-3 sentences): 2. What is the approximate range of frequencies in wave numbers (cm -1 ) in infrared spectra? 3. Characteristic symmetric and asymmetric bond stretching vibrations help to differentiate the various functional groups present in an organic molecule. What is the approximate range (cm -1 ) for these absorptions? 4. In operating an infrared spectrometer, mention two ways to prepare a liquid compound for analysis. 5. Two ways for analysis of a solid compound.
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2 6. What is the approximate wavelength ( λ ) range in nanometers (nm) for the ultraviolet (UV) region? 7. The range (nm) in the visible spectrum (?) 8. What determines the wavelength of UV light absorbed by a molecule? 9. How do you prepare a sample to measure the UV-visible spectrum of a compound? 10. What are the spectral data most characteristic of a sample?
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LAB 2 Materials - Pre-Lab Assignment CHAPTER-2...

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