Mistake Master
Mistake Master · AP Chemistry · Unit 3 · Step-Through Animation
The Spot That Ran Farthest Is Not the One There’s Most Of
You'll learnto read a chromatogram and compute an R₣ from the distances traveled.
One drop of ink climbs a strip of paper and comes apart into three spots at three different heights, with nothing in it chemically changed. Watch what those heights actually measure, and what they emphatically do not. Twelve short steps; press Next for each one.
ONE DROP UP A PAPER STRIP · HOW FAR, AND HOW MUCH
Before you start
What you're looking at
A drop of ink on a pencil line, on a paper strip dipping into a shallow pool of solvent.
The question
When the drop splits into three spots, what do their heights measure?
Step 1 / 12