Using Jablonski Energy diagram, describe and explain the theoretical bases of Fluorescence spectroscopy. What type of analytes can give good fluorescence signals?
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Q: Briefly describe the four stages of mass spectroscopy.
A: The answer is given below:
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Q: Explain IR spectroscopy as a characterization technique.
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Q: Describe different types of shifts in UV/VIS spectroscopy and give examples of they might occur?
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Q: Absorption bands in the region of 1600-1700 cm-1 are often used for quantification of caffeine. What…
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Q: What is monochronator in IR spectroscopy? Please shortly answer at your own words.
A: Detail of Monochromator in IR spectroscopy is given below.
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Q: Sketch the spectra that would be obtained for 2-chloroethanol: The proton-coupled 13C NMR spectrum.
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Q: Why is it common to use CCl4 as a solvent in IR spectroscopy
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Q: In which of the ff. applications can UV-Vis spectroscopy be used? Quantification of colored…
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- What are the necessary conditions for a metal isotope to be useful as a sources in mossbauer spectroscopy.Describe how you would process palm oil samples adulterated with Sudan IV dye prior to Raman spectroscopy. Explain also how you would go about to analyze the sample using the raman spectroscopy to gain qualitative and quantitative information about the dyeTo resolve the Na D lines 591.0 and 591.5 nm, what resolution is required if this is first order?
- This is a ATR spectrum. In which caffeine/PVA films were measured. Line a) correspond to a pure pva film and the other lines are films at increasing caffeine concentration. Notice that the OH band at around 3200cm-1 decreases at higher caffeine concentrations. However at a certain concentration (line d) such band starts to increase back to the initial intensity. What does that mean? Waht is the chemical meaning for that behavior?Chemistry Can help with this IR characterization of phenacetin? Thanks.Explain IR spectroscopy as a characterization technique.
- Why is it common to use CCl4 as a solvent in IR spectroscopy? What drastic change on the IR spectrum would you expect if you were to follow this reaction using IR spectroscopy? You want to take the IR spectrum of acetylene. How would you prepare your sample? Mention all important details of the sample preparation (no need to describe the acquisition)Briefly explain the importance of t1 and t2 relaxation times in magnetic resonance spectrometry.Briefly describe, with the aid of a labelled diagram, the principle of Infrared Spectroscopy. Identify ONE element that is commonly measured in Czochralski grown silicon substrates using Infrared spectroscopy methods.
- How could infrared spectroscopy be used to determine if the reaction of norbornene with water and sulfuric acid to form norborneol occured? Absorptions (specify wavenumbers) must be included in the explanation.Explain what each peak of the IR spectrum of the recrystallised ferrocene sample below corresponds to in great detail. Is the sample pure? Give reasons why.Acrolein shows two bands at 210nm (11,500) and 315 nm(15).assign these bands.
