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Worksheet: Chromatograms

Q1:

The “void peak” in a chromatogram corresponds to which of the following?

  • AThe peak that arises from the mobile phase only.
  • BThe peak that arises from poor selection of a stationary phase.
  • CComponents that had no interaction with the mobile phase.
  • DComponents that had no interaction with the stationary phase.
  • EAll peaks after the first peak in the chromatogram.

Q2:

“Fronting” of a chromatographic peak is a result of which of the following?

  • AInteractions of the solute with the stationary phase
  • BInteractions between the stationary and mobile phase
  • CSmall theortetical plate heights
  • DOverloading the column with sample

Q3:

“Tailing” of a chromatographic peak is a result of which of the following?

  • AInteractions between the stationary and mobile phases
  • BOverloading the column with sample
  • CToo many theoretical plates
  • DInteractions of the solute with the stationary phase
  • ESmall theortetical plate heights