Extraction Report

CHE 317 "Extraction"

The Report

1. As before: Title (specific), Your Name, Date, CHE 317

2. In your own words, explain how extraction works.

3. In one or two sentences, summarize what you did in this experiment.

4. Make a table of the data you collected.

5. Describe the results you obtained from the extraction experiment.

6. What conclusions can you make from the results of your experiment?

7. Answer the following questions:

a) A student made a mistake and did a single extraction with 120 ml of ether instead of three separate extractions with 40 mL of ether each time. How will the students results be affected?

b) A student added anhydrous magnesium sulfate to the combined extracts and the magnesium sulfate dissolved. What error did the student make in the experiment? What should the student do now?

c) During the second extraction, a student added ether to the layer in the separatory funnel and it did not separate. What mistake did the student make? What should the student do now?

d) How pure do you think the propionic acid is that you recovered and how do you know?

e) If, in an extraction, you were uncertain about which layer was the aqueous layer and which layer was the organic layer, how could you quickly settle the issue?

Attach carbons.