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Q: Please draw all possible resonance structures, provided with an explanation
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- Use the Text Submission box to answer the following question. Consider the reaction shown below. For a particular concentration of sodium methoxide, the absorbance at 244 nm is measured using UV-vis spectroscopy. Over an initial period, the absorbance at 244 nm increases from 0.50 to 0.60. When the concentration of sodium methoxide is doubled, the absorbance at 244 nm measured after the same initial period is 0.70. What can you conclude about the mechanism of the reaction? NaOCH 3 Amax = 244 nmQ8. How would you distinguish the following molecules using IR and Mass Spectrometry? Please label at least two differences for IR and two for MS. Please draw the mechanism for the formation of fragments which can distinguish the two molecules via mass spectrometry. HODraw the structure of the compound shown in the mass spectra given its molecular formula C8H9NO. Show the fragmentation mechanisms of each important fragments. The M+ is 135, while the base peak is at 105 m/z.
- Mass spectral analysis of 1-chloropropane results in several fragmentation pathways. Complete the mechanism and gi products for each indicated fragmentation pathway. Include all nonbonding electrons and charges. H H H H- H H H radical cationic intermediate A a-cleavage fragmentation Products C Products BMass spectral analysis of 1-(tert-butyl)piperidine results in several fragmentation pathways. Draw the radical cation intermediate and the fragment ion giving rise to a base peak at 126 amu. Include charges and radical electrons, where applicable. Radical Cation intermediate MS peak at 126 amu ↑The following Figure is the mass spectrum of pentan-3-one (CH;CH2COCH2CH3). Draw the mechanisms for the formation of the three fragmentation ion peaks as shown in the Figure. 57 relative 29 abundance 86 10 20 30 40 50 60 70 80 mlz
- Assume that you are in a laboratory carrying out the catalytic hydrogenation of cyclohexene to cyclohexane. How could you use a mass spectrometer to determine when the reaction is finished?Explain the transitions occurring when acetaldehyde (H-CHO) is exposed to EM radiation. Also explain the two Amax obtained in its UV spectrum by giving out the corresponding spectrumWhat are the fragment ions obtained for the following through both the one bond and 2 bonds fragmentation pathways a) (2R, 5S) 5-methyl-2-heptanol b) benzyl isobutly ether c) (CH3)3CCH2COCH(CH3)CH2CH3 d) (3E, 5Z)-2,5,8,9-tetramethyldodec-3,5-diene
- Provide the complete mechanism using CAF for the reaction shown below. Tell how many signals are visualized in the 1H spectrum for the starting material and the product. H₂O, H₂SO4 gr=gr NH₂ heat OH + NH4+ HSO4Spectrum No.3 The infrared spectrum of this compound shows abroad peak at 3370 cm ¹. There is also a strong peak at 1159 cm¹, the mass spectrum shows no molecular ion peak. You will have to deduce the molecular weight from the heaviest fragment peak which arises from the loss of a methyl group from the molecular ion. Give the mechanism that lead to the formation of ion fragment at m/z= 59 Relative Intensity 100- Relative Intensity 80- 60- 40- 20 0-mmmmm 10 100- 80 60- 40 18-N-3387 20- 20 15--0930 0-T 10 30 20 Spectrum No.4 The mass of the molecular ion for this unknown has an odd value and the IR spectrum shows two close bands in the 3450 cm³¹ region Give the mechanism that lead to the formation of ion fragment at m/e= 30 (30) 40 30 50 40 59 60 m/z 50 m/z 70 60 80 M(73) 90 70 101 80 rytter 100 90 3/5What is the rate expression of •CH4+Cl2 = CCl4+HCI •KClO3=KCl+O2?