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- 10) For each spectrum, give the following: What type of spectroscopy produces a spectrum that looks like that What type or types of energy transitions are involved (i.e. electron going from one atomic orbital to another, molecule going from a lower vibrational state to a higher vibrational state, etc.) What quantum mechanical model or theory provides a description for the type of spectroscopy (i.e. harmonic oscillator model, molecular orbital theory, etc.) What part of the electromagnetic spectrum is absorbed or emitted by the energy transitions for the type of spectroscopy Describe what information this type of spectroscopy can give us about an atom or molecule and how the spectrum is interpretedThe IR spectra of two isomers are given below. Identify which IR spectra belong to isopropylbenzene and propylbenzene, respectively. How we decide them?2. Describe some of the vibrational mode at stretching and bending associated with Infrared Spectroscopy. Draw representative structure denoting such vibrational modes.
- A. Match the following IR spectra with their respective molecules methyl chloride (CH3Cl),methyl bromide (CH3Br), and methyl iodide (CH3I). Explain the answerS.B. Indicate the positions of C—H stretch, H—C—H bend, and other major vibrational modes inall spectra.C. Calculate the number of vibrational modes in methyl chloride.a)Can these two molecules be distinguished by IR spectroscopy? Give reasons for your answer and describe the main IR signals (with frequencies) you expect to see for both molecules. b)Can these two molecules be distinguished by mass spectrometry? Give reasons for your answer.12. Without performing any calculations, identify which stretching vibration will have the higher frequency in each of the following pairs. Explain. (a) C-O vs. C=O (b) H-Cl vs. H-Br
- Compound C6H10O has the infrared spectrum shown below. Draw areasonable structure that is consistent with this data. Please explain work. Calculate the Rvalue first! -This compound has two common functional groups.(g) Which of the following compound gives the largest vibrational frequency among H2, D2,HD, and Cl2? A. HD B. D2 C. H2 D. Cl2Which Factors below affect intensity of an absorption band in an IR spectrum? Select all correct answers. a. Dipole moment O b. Molecular weight c. Concentration of sample d. Bond length e. Atomic mass
- Explain the following trend in the absorptions corresponding to the most energetic C–H stretching mode observed in the IR spectra of the following molecules.Decide which spectra goes with which molecule and explain, please.3. Describe how you would use IR to distinguish the two compounds. Give the difference in frequency, intensity/shape and etc. ( "NH: