Solvent Extraction Using Safe and Commonly Available Materials To Demonstrate the Difference in Solubility of Two Mixed Solutes
Submitted by: Dante Gilbert L. de Leon and Armando M. Guidote, Jr.
Department of Chemistry, Ateneo de Manila University, Manila, Loyola Heights, Quezon City , Phillipines 1108
Checked by: Kimberly L. Kosta
Department of Chemistry, University of Wisconsin–Rock County, Janesville, WI 53546
Fred Juergens
Department of Chemistry, University of Wisconsin–Madison, Madison, WI 53706
Ed Vitz
Department of Chemistry, Kutztown University, Kutztown, PA 19530
A blue, aqueous solution of copper(II) sulfate is mixed with a red ethanolic solution of sudan III forming a purple solution. This mixture is extracted with a nonpolar solvent, resulting in the separation of the red and blue compounds. The nonpolar solvent may be kerosene, vegetable oil, mineral oil, or hexanes. Notes on handling are included.
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Citation
de Leon, Dante Gilbert L.; Guidote, Armando M., Jr. J. Chem. Educ.2003 80 436.
Keywords
Demonstrations; General Chemistry; Introductory / High School Chemistry; Safety / Hazardous Materials; Solutions / Solvents; Teaching / Learning Aids
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