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ERIC Number: EJ1195707
Record Type: Journal
Publication Date: 2018-Sep
Pages: 5
Abstractor: As Provided
ISSN: ISSN-0021-9584
From Observation to Prediction to Application: A Guided Exercise for Liquid-Liquid Extraction
Celius, Tevye C.; Peterson, Ronald C.; Anderson-Wile, Amelia M.; Kraweic-Thayer, Mitchell
Journal of Chemical Education, v95 n9 p1626-1630 Sep 2018
In this organic chemistry laboratory experiment, students are guided through a series of exercises to understand the behavior of compounds during liquid-liquid extraction. Aspects of density, structure, solubility, acid-base theory, and pK[subscript a] are all incorporated into activities that students complete in groups. After using their initial observations to make predictions about the two colored compounds, nile blue and 2,6-dichloroindophenol, students check the reliability of their predictions by carrying out liquid-liquid extractions of these compounds in the laboratory. The set of exercises culminates in the application of the procedures to a real-world situation.
Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Guides - Classroom - Learner
Education Level: Higher Education; Postsecondary Education
Audience: Students
Language: English
Sponsor: N/A
Authoring Institution: N/A