Can UV/VIS spectrophotometry be usd to prove that two substances are unique? explain
Can UV/VIS spectrophotometry be usd to prove that two substances are unique? explain
Homework Answers
UV/Visible spectrophotometry is not always useful to fine uniquenss of the compound, for example N-methyl pyrrole and N-ethyl pyrrole will have almost the same UV, we cannot distinguish using UV/vis spectrophotometry. UV/vis spectrophotometry is useful to identify the conjugated double bond compound. with increase in conjugation, UV will have batochromic shift, therefore it is useful to find identify the conjugated compound.
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Can UV/VIS spectrophotometry be usd to prove that two substances
are unique? explain
15. a. A scanning UV/Vis spectrometer and a diode array uv vis spectrometer ane two kinds of UV/V...
15. a. A scanning UV/Vis spectrometer and a diode array uv vis spectrometer ane two kinds of UV/Vis instruments. Please list one advantage of each design (2 points) b. Please describe the design of an ATR (attenuated total reflection) accessory for measurements of solid samples in the FTIR instruments, (use a drawing. 3 points
15. a. A scanning UV/Vis spectrometer and a diode array uv vis spectrometer ane two kinds of UV/Vis instruments. Please list one advantage of each design...
Ultraviolet- visible Explain ONE of the reasons why solvents can shift the peaks seen in UV-Vis.
Ultraviolet- visible
Explain ONE of the reasons why solvents can shift the peaks seen in UV-Vis.
Explain what is happening at the molecular level during a UV-Vis spectroscopy experiment.
Explain what is happening at the molecular level during a UV-Vis spectroscopy experiment.
Explain the similarities and differences of the excitation, absorption and emission spectra for quinine using UV-Vis and...
Explain the similarities and differences of the excitation, absorption and emission spectra for quinine using UV-Vis and the spectrofluorometer instruments.
Explain what is the purpose of using UV-vis spectroscopy for this particular experiment. What is the...
Explain what is the purpose of using UV-vis spectroscopy for this particular experiment. What is the maximum wavelength in nm that the TA used to collect the absorbance value of Fe(SCN)2+?
Can UV/vis be used to determine if a d4 complex is high or low spin? If...
Can UV/vis be used to determine if a d4 complex is high or low spin? If so, how many spin-allowed bands would appear in the spectrum?
7. In the past two sections, you have now examined to different types of spectroscopy: UV-Vis...
7. In the past two sections, you have now examined to different types of spectroscopy: UV-Vis and PES. a. Sketch a typical atomic energy level diagram (only considering principle quantum number, n) and draw the excitation accomplished by UV-vis spectroscopy (Ground state -> First excited state) b. In the typical energy level structure above, draw the ionization accomplished by Photoelectron spectroscopy (Ground state -> Ionization)
You are given a green solution. Sketch the two possible UV-vis spectra that could result from...
You are given a green solution. Sketch the two possible UV-vis spectra that could result from the solution.
Question 5 (2 marks) (a) Explain the relationship between UV-Vis Spectroscopy and Fluorescence using the Riboflavin...
Question 5 (2 marks) (a) Explain the relationship between UV-Vis Spectroscopy and Fluorescence using the Riboflavin molecule shown below: 0.025 0.02 0.015 absorption CH Ads 0.005 fluorescence LOH 250350450550650750850 OH (b) Why must a molecule that fluoresces also have an absorption spectrum?
Can anyone please explain the mechanism of these two slides and how excitation changes their chemical...
Can anyone please explain the mechanism of these two slides and
how excitation changes their chemical structures?
What does the UV- vis spec tell about these molecules?
What is about their structures that enable them to be detected
by UV-Vis?
Spiropyran - Merocyanine ーR, Δ.hu2 SP quinoidal MC zwitterionic (non-polar media) (polar media) zwitterionic quinoidal SP-MC Uv-Vis Spectra 1.60t: ..* Spiropyran -Merocyanine 0.80: 0.00 300 400 500 600 700 800 Wavelength /nm SP MC
15. a. A scanning UV/Vis spectrometer and a diode array uv vis spectrometer ane two kinds of UV/Vis instruments. Please list one advantage of each design (2 points) b. Please describe the design of an ATR (attenuated total reflection) accessory for measurements of solid samples in the FTIR instruments, (use a drawing. 3 points
15. a. A scanning UV/Vis spectrometer and a diode array uv vis spectrometer ane two kinds of UV/Vis instruments. Please list one advantage of each design...
Ultraviolet- visible
Explain ONE of the reasons why solvents can shift the peaks seen in UV-Vis.
Question 5 (2 marks) (a) Explain the relationship between UV-Vis Spectroscopy and Fluorescence using the Riboflavin molecule shown below: 0.025 0.02 0.015 absorption CH Ads 0.005 fluorescence LOH 250350450550650750850 OH (b) Why must a molecule that fluoresces also have an absorption spectrum?
Can anyone please explain the mechanism of these two slides and
how excitation changes their chemical structures?
What does the UV- vis spec tell about these molecules?
What is about their structures that enable them to be detected
by UV-Vis?
Spiropyran - Merocyanine ーR, Δ.hu2 SP quinoidal MC zwitterionic (non-polar media) (polar media) zwitterionic quinoidal SP-MC Uv-Vis Spectra 1.60t: ..* Spiropyran -Merocyanine 0.80: 0.00 300 400 500 600 700 800 Wavelength /nm SP MC
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