Introduction to Spectrophotometry
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Questions and Answers

What is the unit of measuring wavelength in spectrophotometry?

  • Millimeter
  • Micrometer
  • Centimeter
  • Nanometer (correct)

What is the basic principle of spectrophotometry?

  • Measuring how much a chemical substance absorbs light (correct)
  • Determining the concentration of a chemical substance
  • Measuring the intensity of light after it passes through a sample solution
  • Analyzing the color change of a sample solution

What is the range of wavelength for a UV range spectrophotometer?

  • $100 - 300$ nm
  • $185 - 400$ nm (correct)
  • $600 - 900$ nm
  • $400 - 700$ nm

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 (C)</p> Signup and view all the answers

What type of light source does most spectrophotometers contain?

<p>Tungsten lamp emitting in the visible range only (D)</p> Signup and view all the answers

What is the function of a monochromator in a spectrophotometer?

<p>It absorbs most of the light and allows only light of the complementary color with a sufficiently narrow wavelength. (C)</p> Signup and view all the answers

What is the range of wavelength for a visible range spectrophotometer?

<p>400 - 700 nm (B)</p> Signup and view all the answers

What is the unit of measuring wavelength in spectrophotometry?

<p>$1*10^{-9}$ m (C)</p> Signup and view all the answers

What type of light source does a UV range spectrophotometer use?

<p>Ultraviolet light range (A)</p> Signup and view all the answers

What does spectrophotometry measure in a sample solution?

<p>Intensity of light as the beam passes through the sample solution (C)</p> Signup and view all the answers

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