A. Draw a graph that shows the relative concentration of BTB from the center of the
drop to the edge of where the paper was wet.
See sample graph below question 3
b. In the above graph, did you have the concentration go to zero when you could no
longer see BTB? Or did you assume BTB was still there albeit at invisible levels?
c. Shade in the portions of both graphs where you were making assumptions (saying
things you have no evidence for) about the concentration of BTB.
2. From your data, could you infer that the paper towel is acidic? Explain.
3. How could you prove that your inference about the acidity of the paper is true?
Answers: 3
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A. Draw a graph that shows the relative concentration of BTB from the center of the
drop to the ed...
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