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ERIC Number: EJ1182226
Record Type: Journal
Publication Date: 2018-Jun
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Available Date: N/A
Solubility from the Femtoscale to the Macroscale
Pollock, David W.; Truong, Giovanna T.; Bonjour, Jessica L.; Frost, John A.
Journal of Chemical Education, v95 n6 p962-969 Jun 2018
Solubility is frequently introduced at the high school and introductory college levels through the symbolic domain using net ionic equations and solubility product constants. Students may become proficient with spectator ion cancellation and skilled with algorithmic mathematical applications of solubility without obtaining a deeper understanding of the underlying concept of solubility. We present a convenient chemical system that allows for rapid data collection through benchtop nuclear magnetic resonance (NMR) spectroscopy and simple evaporation experiments. NMR spectroscopy can measure the particulate-level properties of hydrogen nuclei, objects on the order of a femtometer in size. Solvent evaporation to macroscopic solute residue ties solubility back to a visual frame of reference for students. Data collected from these dissimilar methods of measurement lend themselves to relating the particulate, macroscopic, and symbolic domains of understanding in a hands-on laboratory setting.
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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Research
Education Level: Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Wisconsin
Grant or Contract Numbers: N/A
Author Affiliations: N/A