PreLab Experiment 09 - described by this experiment H 2 O...

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Andrew T. Hedrick Chem 32 Section S Experiment 9 – Separation Techniques: Chromatography Prelaboratory Questions 1. How do you define the retention value of a chemical species? Mathematically, it is x / (x+y), where x is the distance that the compound moved  from the origin to the center of the cloud and y is the distance the solvent moved  from the black cloud to the top. 3. What substance acts as the stationary phase in the paper chromatography 
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Unformatted text preview: described by this experiment? H 2 O is the stationary phase. 4. Why should you not allow the solvent to advance to the edge of the chromatographic paper? Because if the solvent advances to the edge then you will not be able to read your results, everything will stay at the edge of the paper instead of being separated. Andrew T. Hedrick Chem 32 Section S...
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