In a chromatography experiment, the solvent front moves 12.5 cm from the starting line, and one…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
In a chromatography experiment, the solvent front moves from the starting line, and one spot moves . What is the of the spot? Does this dye dissolve well in the solvent?
Need a reminder? The key ideaShow
In chromatography, each dye is carried up the paper at its own speed. , measured from the starting line. It has no unit, lies between and , and identifies a substance in a given solvent.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The . .
Step 2. What it means. The spot went only about a quarter of the way: the dye does not dissolve well in this solvent, and it clings to the paper.
Answer: ; the dye dissolves poorly in this solvent.
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