Separating Compounds by Paper Chromatography

Separating Compounds by Paper Chromatography - Separating...

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Separating Compounds by Paper Chromatography By; Josué Rigueiro CM 103 June 4, 2008 Marilyn Carlson
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Introduction Separating Compounds by Paper Chromatography, what’s the point? Well it is actually more interesting that it sounds at first, paper chromatography has been used for many years, from the lab at a local Community College, to forensics labs for crime investigations. In the lab studied in this report, we will use different colors dyes and observe the intermolecular forces and how they behave once introduced to other compounds. We also will observe how the molecular structure of the molecule has a role in the intermolecular compound. Chromatography from the Greek words chroma and graphein basically means to write with colors. It was discovered In the early 1900s by scientist named Mikhail Tswett, and later improved in the 1950s by Richard Laurence Millington Synge, and Archer John Porter Martin, who won a noble prize from it. Chromatography is a method used to compare solubility. There are the components that are being compared, which are placed on chromatography paper. Chromatography paper is considered to be the stationary phase. The components are then introduced to the mobile phase, for example a gas or a liquid. If the component tends to be less soluble, when placed on the chromatography paper, we will observe that it will move faster along the stationary phase, compared to a component that is more soluble where it would move less rapidly along the paper. Intermolecular forces also play a role in the process of the different components traveling along the chromatography paper. The components used in this experiment are different dyes. Each dye that is placed on the chromatography paper might travel different distances, and this has to do with the polarity of the dye it self. Due to the
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Separating Compounds by Paper Chromatography - Separating...

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