Chemistry 101 Laboratory

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Chemistry 101 Laboratory
Paper Chromatography

• Separating the colors
• in Flair felt-tipped pens.

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The items needed are easily obtained.
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A bit of Rubbing alcohol is poured into a250 mL
beaker. Then cover the beaker.
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Using a pencil, the paper is marked off in even 1
cm increments.
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Each pen color is assigned to a mark.Here we are
using only 5 pen colors.
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Each mark is spotted with its respective color.
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The chromatogram is placed into the beaker
spotted end down.
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As time passes . . .
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As time passes . . .
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As time passes . . .
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Finally (Not good separation . . . )
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A better separation (10/9/00)
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While the chromatogram is developing, go to the
lab and complete the Salt/Sand experiment.

• Determine the masses of the separated components
  and calculate the percent of each recovered.
• Swirl the sand with a bit of distilled water and
  decant the water into a test tube.
• Add a few drops of 5 silver nitrate soln and
  observe the results.
• Complete the Lab Report and turn it in today.

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Come back when your chromatogram has completed
developing ( 1 hour)

• Discard the developing solvent (rubbing alcohol)
  in the sink.
• Rinse the beaker and return it to the box.
• Take your chromatogram with you and complete your
  Lab Report to turn in at your next lab meeting.