How does the solvent effect chromatography?

Answer 1

Chromatography is a technique used to separate the components of a mixture. Different solvents will dissolve different substances.

A polar solvent (water) will dissolve polar substances (water soluble ink in the video below).

A non-polar solvent will dissolve non-polar substances. Not in the video, but if you want to do chromatography with ink from a permanent marker you would need to use a different solvent (an alcohol could work).

Here is a video which shows a paper chromatography experiment which was conducted to separate the pigments found in a black overhead marker.

video from: Noel Pauller

Hope this helps...
Noel P.

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Answer 2

Noah Aldrich

The solvent in chromatography affects the separation of components by controlling the rate at which they move through the stationary phase. Different solvents have varying polarities, which influence the interactions between the components and the stationary phase. Adjusting the polarity of the solvent can change the retention times of the components and thus affect the resolution of the chromatogram.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.