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I need help with all 3 problems. thank you!
6. For the compound below give the...
could someone help in answering these 3 questions? 1. What set of reagents will best accomplish...
could someone help in answering these 3 questions?
1. What set of reagents will best accomplish the following transformation? NO2 A. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4; 4) H20, heat; B. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4 C. 1) HNO3, H2S04; 2) CH3CH2CH=CH2, HF; D. 1) CH3CH2CH=CH2, HF; 2) HNO3, H2SO4; E. none of the above 2. For the compound below give the inte ratio that would be observed for each of the protons sets in...
6. For the compound below give the integration ratio that would be observed for each of...
6. For the compound below give the integration ratio that would be observed for each of the protons sets in the 'H NMR spectrum. На. -На Hb НЬ A) Ha=4, Hb=2 B) Ha=2, Hb=2 C) Ha=2, Hb=1 D) Ha=1, Hb=1 E) None of the above.
Which of the following electromagnetic radiation is used in NMR spectroscopy? A) UV B) IR C)...
1. Which of the following electromagnetic radiation is used in NMR spectroscopy?A) UVB) IRC) visibleD) γ-raysE) radio wave2. Which of the following is true about the number of signals in a 1 HMMR spectrum?A) it indicates the number of neighboring protonsB) it indicates the electronic environment of neighboring protonsC) it indicates the number of different kinds of protonsD) it indicates the electronic environment of absorbing protonsE) it indicates the number of protons in the signal3. Protons Ha and Hb in...
8. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic...
8. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic spectrum? B O E None of the above 9. What will be the product of the following reaction sequence? Nanti a Ho.h B C OH D E none of the above
2. The protons marked Ha and Hb in the molecule below are: A) chemically equivalent B)...
2.
The protons marked Ha and Hb in the molecule below are:
A) chemically equivalent B) enantitopic C) diastereotopic D)
endotopic E) none of the above
3. Predict the number of signals expected in the 13C NMR
spectrum of the compound shown below.
1, 2, 3, 4, or 8
7.
12.
4. The proton NMR and IR spectra of Compound B are shown on the next page....
4. The proton NMR and IR spectra of Compound B are shown on the next page. Using the molecular formula C,H,O: (a) Calculate the index of unsaturation. (b) Assign at least three absorption bands in the IR spectrum to functional groups. (C) By considering this value in your analysis of the spectra, give the correct structure for unknown B. Integration values are given above the peaks. (d) Label all peaks in the NMR spectrum, i.e., Ha, Hb, etc., and place...
could someone answer these 3 review questions? 1. Which of the following compounds will absorb energy...
could someone answer these 3 review questions?
1. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic spectrum? B - 에 C >OH B. NO D c E none of the above 3. What will be the product of the following transformation? D. CHala Zn (Cu) ? E None the above A 2. What will be the product of the following reaction sequence? B NaNH2 H.O.H с D. E. None of the above
1. List the most common nuclei that are used in NMR. 2. How many nuclear spin...
1. List the most common nuclei that are used in NMR. 2. How many nuclear spin states are possible for the 1H nucleus? A. 1 B. 2 C. 4 D. 5 E. none of these 3. Which of the following electromagnetic radiation is used in NMR spectroscopy? A. UV B. IR C. visible D. γ-rays E. radio wave 4. _______ protons experience a net magnetic field strength that is smaller than the applied magnetic field. A. Deshielded B. Shielded C. ...
3. Draw the arrow-pushing mechanism of the reaction, including all proton transfer steps. 4. Below is...
3. Draw the arrow-pushing mechanism of the reaction, including all proton transfer steps. 4. Below is the structure of your product, benzocaine, with protons labelled A-E. The 'H NMR spectrum is provided on the next page. Describe the multiplicity (with J values) and integration you would expect to observe for each of the protons. Which peak would you expect to have a higher chemical shift, C or D? Draw resonance OSO structures of benzocaine to explain your reasoning. NH2E
Please answer Questions 8,9, & 10 and explain why please. Thanks! 8. Which compound is the...
Please answer Questions 8,9,
& 10 and explain why please. Thanks!
8. Which compound is the reactant for this reaction? OH ? 1. NaOH (excess), 70°C 2. H30* NO2 H NO2 NO2 B. NO2 NO2 D Br NO2 E. A. C. 9. Which statement best describes the aromaticity and UV-vis spectra of these two substances? II A. Both are aromatic. The longest wavelength of absorbance of I is larger than that of II. B. Both are aromatic. The longest wavelength...
could someone help in answering these 3 questions?
1. What set of reagents will best accomplish the following transformation? NO2 A. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4; 4) H20, heat; B. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4 C. 1) HNO3, H2S04; 2) CH3CH2CH=CH2, HF; D. 1) CH3CH2CH=CH2, HF; 2) HNO3, H2SO4; E. none of the above 2. For the compound below give the inte ratio that would be observed for each of the protons sets in...
6. For the compound below give the integration ratio that would be observed for each of the protons sets in the 'H NMR spectrum. На. -На Hb НЬ A) Ha=4, Hb=2 B) Ha=2, Hb=2 C) Ha=2, Hb=1 D) Ha=1, Hb=1 E) None of the above.
8. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic spectrum? B O E None of the above 9. What will be the product of the following reaction sequence? Nanti a Ho.h B C OH D E none of the above
2.
The protons marked Ha and Hb in the molecule below are:
A) chemically equivalent B) enantitopic C) diastereotopic D)
endotopic E) none of the above
3. Predict the number of signals expected in the 13C NMR
spectrum of the compound shown below.
1, 2, 3, 4, or 8
7.
12.
4. The proton NMR and IR spectra of Compound B are shown on the next page. Using the molecular formula C,H,O: (a) Calculate the index of unsaturation. (b) Assign at least three absorption bands in the IR spectrum to functional groups. (C) By considering this value in your analysis of the spectra, give the correct structure for unknown B. Integration values are given above the peaks. (d) Label all peaks in the NMR spectrum, i.e., Ha, Hb, etc., and place...
could someone answer these 3 review questions?
1. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic spectrum? B - 에 C >OH B. NO D c E none of the above 3. What will be the product of the following transformation? D. CHala Zn (Cu) ? E None the above A 2. What will be the product of the following reaction sequence? B NaNH2 H.O.H с D. E. None of the above
3. Draw the arrow-pushing mechanism of the reaction, including all proton transfer steps. 4. Below is the structure of your product, benzocaine, with protons labelled A-E. The 'H NMR spectrum is provided on the next page. Describe the multiplicity (with J values) and integration you would expect to observe for each of the protons. Which peak would you expect to have a higher chemical shift, C or D? Draw resonance OSO structures of benzocaine to explain your reasoning. NH2E
Please answer Questions 8,9,
& 10 and explain why please. Thanks!
8. Which compound is the reactant for this reaction? OH ? 1. NaOH (excess), 70°C 2. H30* NO2 H NO2 NO2 B. NO2 NO2 D Br NO2 E. A. C. 9. Which statement best describes the aromaticity and UV-vis spectra of these two substances? II A. Both are aromatic. The longest wavelength of absorbance of I is larger than that of II. B. Both are aromatic. The longest wavelength...
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