A student properly sets up a column chromatography experiment. Although the mixture is soluble in the mobile phase, the sample appears "stuck" at the top of the column and will not elute regardless of how much solvent is applied. What could be the cause of this problem and what could the student do to try and achieve a successful separation?

Q: 8. Compare the advantages and limitations of column chromatography with those of thin-layer and gas…

A: Column Chromatography Thin layer Chromatography Gas Chromatography Column Chromatography is used…

Q: A student properly sets up a column chromatography experiment. Although the mixture is soluble in…

A: Column chromatography is used to separate or purify different materials.This colomn chromatography…

Q: Explain

A: In TLC analysis we put solvent below the sample spot .

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A:

Q: In your understanding, what is meant by reversed-phase chromatography? Explain its difference from…

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Q: 3. Two peaks in a particular gas chromatogram have a retention ratio of 1.25. If this mixture was…

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Q: Explain the relationship between polarity of the compound and retention factor in chromatography

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Q: 3. A student performs a separation by TLC on a silica get plate that results in three spots. A red…

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Q: In reverse phase chromatography which analyte will elute first, most polar or least polar?

A: In reverse phase chromatography, polar solvent is used as a mobile phase.

Q: d. The chromatogram below was the first attempt at separating this four-component mixture. This…

A: The aim of this question is to show the change was to improve resolution and explain complete…

Q: When you prepare your sample to run through the column chromatography , what is the first proper…

A: For the column chromatography the sample should be properly dissolved in an appropriate solvent

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Q: a) What would you see if you ran a Thin Layer Chromatography (TLC) on a mixture of the three solids…

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Q: What is meant by retention time in gas chromatography.  In what order will they come hexane, ethyl…

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Q: All types of chromatography have mobile phaseand stationary phase. What is a stationary phase and a…

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Q: An orange compound was added to the top of a chromatography column. Solvent was added immediately,…

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Q: Classify the stationary phases based on whether they are commonly used in reversed-phase liquid…

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