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- Determine the molecular formula and possible structures for the unknown based on the spectra given. Label the characteristic stretches on the IR. Label the molecular ion peak and the base peak on the mass spectrum.Shown below are the IR spectrum and the Mass Spectrum of a compound of molecular formula C3H8O. Using the spectral data, determine the structure of the compound. Provide evidence from both spectra to support your answer.The M+ peak for an alcohol in the mass spectrum is 74. Find the structure of the alcohol.
- Match the molecules from the drawings that is most likely to have produced each of the three Mass Spectrum. Then identify the likely breakdowns that yield each major peak.In the presence of ammonia, methyl pentanoate will give H as a product. The mass spectrum of H is given below. Determine the structure of H. Explain your answer.The alkene C8H8 was made when reacting an unknown carbonyl compound with methylene phosphonium ylide. The IR and mass spec for the unknown carbonyl compound and C8H8 are attached. Which spectrum is associated with which compound , and how do important peaks indicate this?
- Identify two peaks that are expected to appear in the mass spectrum of 3-pentanol. For each peak, identify the fragment associated with the peak.The mass spectrum of a compoun is shown below. Which of the following is this compound? A. CyclopropanolB. Trimethylene oxideC. ButaneD. AcetoneE. Propen-2-olThe two mass spectra below correspond to two isomers of C5H10O. Match the spectrum with the compound and draw the fragment ion that corresponds to the base peak.
- 1. List the integration of all peaks as a ratio. For example, 4-hydroxy-4-methyl-2-pentanone would have a ratio of 1:2:3:6.How does the integration of the peaks correlate to the number of hydrogens present in the molecule? 2. For each peak, draw a partial structure that uses all three pieces of information (chemical shift, integration, splitting patterns). Make sure that you highlight the hydrogen atom or atoms that are responsible for the signal. An example of this is: -CO-CH2-CR2- 3. Based on the chemical shifts, what functional groups are present in your compound? For each, correlate the functional group with the chemical shift of the identifying peak.A low-intensity peak at ?/? = 31 can be seen in the mass spectrum of methyl acetate in Figure 3. Propose a fragment that could originate from methyl acetate and be responsible for this peak.analyse the spectra and write the name of the compound. Also write brief explanation for each spectra verifying the part of you suggested molecule (For IR indicate the functional groups which matches the peaks, for mass indicate the fragments, for CNMR and HNMR indicate which peak to what?