Spectrophotometer and Spectrophotometry
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Spectrophotometer and Spectrophotometry

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@IdolizedSalamander

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Questions and Answers

What is the basic principle of spectrophotometry?

  • Determining the weight of a chemical substance by analyzing light absorption
  • Measuring the speed of light as it passes through a sample solution
  • Quantifying the volume of a chemical substance based on light intensity
  • Measuring how much a chemical substance absorbs light by measuring the intensity of light as the beam of light passes through a sample solution (correct)
  • What is the unit of measuring wavelength in spectrophotometry?

  • Micrometer (µm)
  • Millimeter (mm)
  • Centimeter (cm)
  • Nanometer (nm) (correct)
  • What type of light does a UV range spectrophotometer use?

  • Light over the infrared range, with wavelength ranges between 700 - 1000 nm
  • Light over the ultraviolet range, with wavelength ranges between 185 - 400 nm (correct)
  • Light over the X-ray range, with wavelength ranges above 1 nm
  • Light over the visible range, with wavelength ranges between 400 - 700 nm
  • What is the function of the tungsten lamp in a spectrophotometer?

    <p>To emit light in the visible range only as the light source</p> Signup and view all the answers

    What does a monochromator do in a spectrophotometer?

    <p>Absorbs most of the light and allows only light of the complementary color with a sufficiently narrow wavelength</p> Signup and view all the answers

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