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Chromatography (Paper chromatography (R^f Values (The ratio of the…
Chromatography
Paper chromatography
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R^f Values
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The R^f valuse of a particular substance will always be the same as long as the same paper and solvent are used
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Used to separate coloured substances, such as inks, food colouring and dyes
Can also be used to separate colourless mixtures with the use of a locating agent, which adds pigments to otherwise colourless substances
