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Chemistry LibreTexts

In-class Problem Set – Extraction

Problem #1

After completing this problem, the student will be able to:

  1. Devise a scheme to be able to isolate organic acids, bases and neutrals through an extraction process.
  2. Devise a scheme to be able to extract metal ions into an organic phase.
  3. Predict the general effect of pH on the extraction efficiency of a metal ion into an organic phase.

Problem #2

After completing this problem, the student will be able to:

  1. Devise a scheme to be able solubilize an organic ion with a lipophillic component into an organic phase using ion pairing.

After the introductory lecture material on chromatography, the student will be able to:

  1. Write the expression for the distribution coefficient
  2. Write the expression for the partition coefficient
  3. Describe how paper and thin-layer chromatography work
  4. Write the definition of adsorption and partitioning
  5. Describe the procedure for coating a liquid chromatographic phase
  6. Write the expression for the selectivity factor
  7. Write the expression for the retention or capacity factor
  8. Describe the concepts of a theoretical plate and height equivalent of a theoretical plate
  9. Write the expression for the resolution of two chromatographic peaks