Introduction to infrared IR Spectroscopy: Answer the following questions below, (These questions will have more than one part to each question, be sure to answer each part): 1. What are the advantages of using a salt plate instead of a plastic IR sample card for a non-aqueous liquid sample? Which would be better for an aqueous sample? Why? 2. For a molecule with three atoms, it is predicted that there will be three IR-active vibrational modes. Why might there be less than three bands in its IR spectrum? Why might there be more than three ? 3. Explain the progression of stretching frequencies from highest to lowest for the following series of bonds: CN, CC, C=O, C=C, aromatic. 4. What bands would be seen in the 4000 to 1300 cm-1 range of the IR spectrum of cis-2-buten-1-ol? To what functional group would each of these correspond?
Introduction to infrared IR Spectroscopy:
Answer the following questions below, (These questions will have more than one part to each question, be sure to answer each part):
1. What are the advantages of using a salt plate instead of a plastic IR sample card for a non-aqueous liquid sample? Which would be better for an aqueous sample? Why?
2. For a molecule with three atoms, it is predicted that there will be three IR-active vibrational modes. Why might there be less than three bands in its IR spectrum? Why might there be more than three ?
3. Explain the progression of stretching frequencies from highest to lowest for the following series of bonds: CN, CC, C=O, C=C,
4. What bands would be seen in the 4000 to 1300 cm-1 range of the IR spectrum of cis-2-buten-1-ol? To what
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