10 Questions
What is the main reason that saturated hydrocarbons are transparent in the near UV range (200 - 300 nm)?
They have no conjugation to extend the absorption wavelength
Which of the following compounds is most likely to show absorption in the near UV range (200 - 300 nm)?
A conjugated hydrocarbon
What is the typical absorption wavelength range for saturated compounds containing heteroatoms (S, N, O, or halogens)?
They do not absorb in the near UV
What is the primary reason that alcohols and ethers are useful as common solvents at wavelengths greater than 200 nm?
They have low absorption in this region
What is the typical absorption wavelength range for alcohols and ethers?
Less than 185 nm
Which of the following statements about the absorption properties of saturated hydrocarbons is correct?
They absorb in the far UV (< 170 nm) but not the near UV
Why are saturated hydrocarbons considered ideal solvents for studying other compounds in the near UV (200 - 300 nm) region?
They have low absorption in this region
What is the primary reason that the absorption of saturated compounds containing heteroatoms (S, N, O, or halogens) is limited to the far UV region?
They have no n-electrons to absorb in the near UV
Which of the following compounds is most likely to have an absorption cut-off wavelength in the 200 - 220 nm region?
Alcohols and ethers
Why are saturated hydrocarbons considered to be transparent in the near UV (200 - 300 nm) region?
They have no n-electrons to absorb in this region
Explore the fundamentals of spectroscopy in instrumental analysis, covering the interaction of radiant energy with matter for identification and quantification purposes. Discover spectrophotometry methods and the study of electromagnetic radiation absorption or emission.
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