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Solvent Extraction Using Safe and Commonly Available Materials To Demonstrate the Difference in Solubility of Two Mixed Solutes

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Dante Gilbert L. de Leon and Armando M. Guidote Jr.

Department of Chemistry, Ateneo de Manila University, Manila, Loyola Heights, Quezon City , Phillipines 1108

Fred Juergens

Department of Chemistry, University of Wisconsin–Madison, Madison, WI 53706

Ed Vitz

Department of Chemistry, Kutztown University, Kutztown, PA 19530

J. Chem. Educ., 2003, 80 (4), p 436

DOI: 10.1021/ed080p436

Publication Date (Web): April 1, 2003

Section:

History, Education, and Documentation

Abstract

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.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Demonstrations

Keywords (Feature):

Tested Demonstrations

Keywords (Subject):

Solutions / Solvents

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Control of Chemical Equilibrium by Solvent: A Basis for Teaching Physical Chemistry of Solutions
Oleg V. Prezhdo and Colleen F. Craig , Yuriy Fialkov , Victor V. Prezhdo
Journal of Chemical Education2007 84 (8), 1348
- Control of Chemical Equilibrium by Solvent: A Basis for Teaching Physical Chemistry of Solutions
  Oleg V. Prezhdo and Colleen F. Craig , Yuriy Fialkov , Victor V. Prezhdo
  Journal of Chemical Education2007 84 (8), 1348
  The mechanisms by which solvent can be used to control chemical equilibria are analyzed from a thermodynamic perspective and illustrated with several examples. The solvent effect is described in terms of universal- and specific-solvation components, and ...
  Abstract | Hi-Res PDF | PDF w/ Links