Exercise 1: Paper Chromatography Data Table 1. Photographs of Chromatograms. Pho
ID: 944006 • Letter: E
Question
Exercise 1: Paper Chromatography
Data Table 1. Photographs of Chromatograms.
Photograph of Chromatogram #1
Photograph of Chromatogram #2
Data Table 2. Chromatogram Sheet 1 Data.
Sample
Solvent front (mm)
Spot 1
Spot 2
Spot 3
mm
Rf
mm
Rf
mm
Rf
Blue 1
Blue 2
Red 3
Red 40
Yellow 5
Yellow 6
KG
KS
Data Table 3. Chromatogram Sheet 2 Data.
Sample
Solvent front (mm)
Spot 1
Spot 2
Spot 3
mm
Rf
mm
Rf
mm
Rf
Store Red
Store Yellow
Store Green
Store Blue
Unknown
M&M: M -_
M&M: M -_
M&M: M -_
M&M: M -_
Data Table 4. FD&C Dyes in Samples.
Sample:
FD&C Dyes in Sample
Kool-Aid Grape ®
Kool-Aid Strawberry ®
Store Red
Store Yellow
Store Green
Store Blue
Unknown Sample
M&M®__________
M&M®__________
M&M®__________
M&M®__________
Questions
What might happen you used a pen to mark the baseline on the chromatography paper?
What would happen if you did not stop the chromatograph before the solvent reached the top of the paper?
What would happen if the solvent level was above that of the dye spots on the paper at the start of the chromatography?
Why is it important to mark the solvent level on the chromatography paper as soon as you remove it from the Petri dish?
Photograph of Chromatogram #1
Photograph of Chromatogram #2
Explanation / Answer
1.
A pen should not be used to draw the baseline on the chromatogram because the pen ink will dissolve and would be separated and can mix with the dyes and interfere with the results.Thus a pencil should be used instead.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.