5. What evidence is there that marker ink is a mixture?

Question

6. Each compound in the marker ink is represented by a color. Did one compound travel farther than others? Explain why you think that this is the case.
7. Did the compounds travel farther in water or isopropyl alcohol (rubbing alcohol)? Explain why you think that this is the case.
8. How could you improve upon the accuracy of your R[f] measurements?

Answer 1

i think im going insane not knowing how to answer these questions, ive done research and i still dont get it

Answer 2

I just don't understand why you have a problem. First, I assume yu are talking about a chromatography(maybe paper or silica gel) experiment. Did you do it or is this a dry lab? If you did it, surely you saw a number of spots (and not just one spot) as the ink traveled from the insertion point at the bottom up towards the top. So wouldn't more than one spot tell you that the marker ink was comp;osed of more than one material?
7 & 8. I'll leave these for you but consider the answers to 5 and 6 to help you through these. Of course you observed the difference between the two solvents. Consider that the two solvents have different solubilities, that they are adsorbed to the paper/silica gel in different ways, the hydrogen bonding differs, etc.
6. Were all of the spots in one spot (on top of one another) or were they separated. You can see if they traveled the same distance or not can't you? Why would they travel different distances in the same time. Must be that
each compound of the ink "grabs" the solid material(the paper or silica gel) at different rates? Just a thought.
7.

Answer 3

i think it is made of water and a surten chemical.