SAS 8: Spectroscopy and Color Absorption
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Questions and Answers

What is the relationship between the wavelength and the energy of radiant energy?

  • The longer the wavelength, the lower the energy
  • The longer the wavelength, the greater the energy
  • The shorter the wavelength, the lower the energy
  • The shorter the wavelength, the greater the energy (correct)

    • What is the definition of wavenumber?

  • The number of complete cycles passing a given point per second
  • The number of waves per centimeter (correct)
  • The frequency of a wave
  • The length of a complete wave

    • Which branch of spectrometry involves the measurement of absorption by chemical species of radiant energy?

  • Nuclear magnetic resonance spectroscopy
  • Mass spectrometry
  • Fluorescence spectroscopy
  • Spectrophotometry (correct)

    • What do spectrophotometer and spectrometer have in common?

    <p>Both measure the absorption of radiant energy</p> Signup and view all the answers

    What does absorbimetric methods utilize?

    <p>Visible regions of the spectrum</p> Signup and view all the answers

    What is the term used to define the complete system of energy propagated in wave form?

    <p>Electromagnetic spectrum</p> Signup and view all the answers

    What does colorimetric methods utilize?

    <p>Visible regions of the spectrum</p> Signup and view all the answers

    What does spectrometry deal with?

    <p>Measurement of spectra</p> Signup and view all the answers

    What is the term used to describe the interaction of cu ions with a portion of the incident radiant energy?

    <p>Transmitted light</p> Signup and view all the answers

    What does spectrophotometry deal with?

    <p>Measurement of spectra</p> Signup and view all the answers

    What is the relationship between the wavelength and the energy of radiant energy?

    <p>The shorter the wavelength, the greater the energy</p> Signup and view all the answers

    Which branch of spectrometry involves the measurement of absorption by chemical species of radiant energy?

    <p>Spectrophotometry</p> Signup and view all the answers

    What does absorbimetric methods utilize?

    <p>Absorption of radiant energy by chemical species</p> Signup and view all the answers

    What is the definition of wavenumber?

    <p>Number of waves per cm</p> Signup and view all the answers

    What is the term used to define the complete system of energy propagated in wave form?

    <p>Electromagnetic spectrum</p> Signup and view all the answers

    What does colorimetric methods utilize?

    <p>Utilization of visible regions of the spectrum</p> Signup and view all the answers

    Which method is an analytical method based on the absorption of radiant energy?

    <p>Absorptimetric methods</p> Signup and view all the answers

    What is transmitted light and under what condition it registers the color sensation?

    <p>Registers only certain colors when absorbed by cu ions</p> Signup and view all the answers

    Study Notes

    Energy and Wavelength

    • As the wavelength of radiant energy decreases, its energy increases.
    • Conversely, as the wavelength increases, its energy decreases.

    Wavenumber

    • Wavenumber is defined as the reciprocal of the wavelength.

    Spectrometry

    • Spectrometry involves the measurement of the interaction between radiant energy and matter.
    • It deals with the study of the interaction between matter and electromagnetic radiation.

    Spectrophotometry and Spectrometer

    • Spectrophotometry and spectrometer have in common the measurement of the absorption of radiant energy by chemical species.

    Absorbimetric Methods

    • Absorbimetric methods utilize the measurement of the absorption of radiant energy by chemical species.

    Electromagnetic Radiation

    • Electromagnetic radiation is the complete system of energy propagated in wave form.

    Colorimetric Methods

    • Colorimetric methods utilize the measurement of the absorption of radiant energy by chemical species, which produces a color change.

    Spectrophotometry

    • Spectrophotometry deals with the measurement of the absorption of radiant energy by chemical species.

    Interaction with Cupric Ions

    • The term used to describe the interaction of cu ions with a portion of the incident radiant energy is called absorption.

    Transmitted Light

    • Transmitted light is the light that passes through a sample, registering a color sensation when it meets the eye.
    • Transmitted light registers a color sensation when the wavelengths of the light are within the visible spectrum.

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    Description

    Explore the principles of spectroscopy and color absorption in SAS 8. Learn about the qualitative analysis of absorbed and transmitted colors, and the interaction of Cu ions with radiant energy. This quiz covers topics related to absorptimetric methods in analytical chemistry.

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