Chromatographic Separations in Pharmaceutical Analytical Chemistry
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Questions and Answers

How is planar chromatography different from column chromatography?

  • Planar chromatography uses a flat surface as the stationary phase, while column chromatography uses a narrow column. (correct)
  • Planar chromatography uses gravity to pass the mobile phase through the stationary phase, while column chromatography uses capillary action.
  • Planar chromatography uses a gas as the mobile phase, while column chromatography uses a liquid.
  • Planar chromatography separates components based on their size, while column chromatography separates based on density.
  • What is the basis of separation in chromatography?

  • Relative attraction of components to the stationary phase and the mobile phase (correct)
  • Relative density of the components in the mixture
  • Relative size of the components in the mixture
  • Relative concentration of the components in the mixture
  • How are chromatographic techniques often named?

  • By listing the type of stationary phase followed by the type of mobile phase
  • By listing the type of detector followed by the type of sample
  • By listing the type of sample followed by the type of solvent
  • By listing the type of mobile phase followed by the type of stationary phase (correct)
  • What determines the migration rate of sample components in chromatographic separation?

    <p>Difference in migration rate among sample components</p> Signup and view all the answers

    What is the function of the mobile phase in chromatography?

    <p>Carrying components through the stationary phase</p> Signup and view all the answers

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