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Label three clean 13 x 100 mm test tubes with
numbers 1, 2 and 3.
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Into the test tube label 1 add steric acid to
cover the curved bottom.
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Add the same amount of oleic acid to test tube
#2. Do not add anything to test tube 3 at this point. Add
5 mLs of chloroform (a clear, colorless liquid, to each
test tube 1, 2 and 3. Before continuing be sure the
samples in test tubes 1 and 2 have completely dissolved.
Do not get any of the chloroform on your hands or
clothes.
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Now add about 50 drops of the iodine solution to
test tubes 1, 2 and 3 and mix the solutions.
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Use a white sheet of paper as a background
compare the color intensity in test tube 1 and 2 with the
control (test tube 3). Record your observations on the
Results page.
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