How will you use simple filter paper to demonstrate chromatography? Explain with diagram.
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Answer:
Wait some minutes until the solvent front reaches near the top of the paper. The ink should separate into component colours. Take out the paper and quickly mark the solvent front before it dries. You can measure the height of the ink spots above the orgin and compare with the solvent front for the Rf value.M
Paper chromatography is a legitimate though primitive form of chromatography but it can be used as a model to talk about all types. A sample spot of black ink can be applied near the bottom edge at a marked location. The edge is dipped in solvent ( a bit of trial and error here) maybe methanol. A covered chamber can be used to house the experiment, making it more reproduceable. Wait some minutes until the solvent front reaches near the top of the paper. The ink should separate into component colours. Take out the paper and quickly mark the solvent front before it dries. You can measure the height of the ink spots above the orgin and compare with the solvent front for the Rf value.