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What Should We Teach Beginners about Solubility and Solubility Products?
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Abstract
Solubility product calculations using the simple algorithms in introductory texts usually produce dramatic and often catastrophic errors because of incomplete dissociation of the salt and complexation by excess ion. Less dramatic but still substantial errors result from neglect of activity coefficients. Solubility equilibria are best taught qualitatively in introductory chemistry, leaving the calculations to higher level courses.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
CurriculumKeywords (Subject):
Solutions / SolventsCiting Articles
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This article has been cited by 18 ACS Journal articles (5 most recent appear below).
“Gone” into Solution: Assessing the Effect of Hands-On Activity on Students’ Comprehension of Solubility
Laura B. Bruck and Aaron D. Bruck, Amy J. PhelpsJournal of Chemical Education2010 87 (1), 107-112“Gone” into Solution: Assessing the Effect of Hands-On Activity on Students’ Comprehension of Solubility
Laura B. Bruck and Aaron D. Bruck, Amy J. PhelpsJournal of Chemical Education2010 87 (1), 107-112Solubility is challenging for many general chemistry students, and the interactions of aqueous species are difficult to conceptualize. Derived from the pedagogies of Johnstone, Bloom, and Piaget, our primary research questions probe whether students’ ...
Illustrating the Concept of Sparingly Soluble Salts Using Various Copper Compounds. A Classroom Demonstration
Daniel W. O'Sullivan and Collier C. Crouch , David B. GreenJournal of Chemical Education2009 86 (2), 202Illustrating the Concept of Sparingly Soluble Salts Using Various Copper Compounds. A Classroom Demonstration
Daniel W. O'Sullivan and Collier C. Crouch , David B. GreenJournal of Chemical Education2009 86 (2), 202Many students in general and advanced chemistry courses have difficulty understanding differences in solubility by inspecting changing values of the solubility product constants for sparingly soluble salts. In this demonstration, the concepts involved in ...
Polymeric, Metallic and Other Glasses in Introductory Chemistry
Stephen J. HawkesJournal of Chemical Education2008 85 (10), 1377Polymeric, Metallic and Other Glasses in Introductory Chemistry
Stephen J. HawkesJournal of Chemical Education2008 85 (10), 1377Polymeric, metallic, and other glasses and their importance are described suitably for introductory chemistry.
Applications of Solubility Data
Reginald P. T. TomkinsJournal of Chemical Education2008 85 (2), 310Applications of Solubility Data
Reginald P. T. TomkinsJournal of Chemical Education2008 85 (2), 310This article describes several applications of the use of solubility data. It is not meant to be exhaustive but rather to show that knowledge of solubility data is required in a variety of technical applications that assist in the design of chemical ...
Predominance Diagrams, a Useful Tool for the Correlation of the Precipitation–Solubility Equilibrium with Other Ionic Equilibria
Constantino Fernández Pereira , Manuel Alcalde , Rosario Villegas and José ValeJournal of Chemical Education2007 84 (3), 520Predominance Diagrams, a Useful Tool for the Correlation of the Precipitation–Solubility Equilibrium with Other Ionic Equilibria
Constantino Fernández Pereira , Manuel Alcalde , Rosario Villegas and José ValeJournal of Chemical Education2007 84 (3), 520The four types of ionic equilibria—acid–base, redox, precipitation, and complexation—have certain similarities, which has led some authors to develop a unified treatment of them. These authors have highlighted the common aspects and tried to find a ...
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- Received: August 03, 2009
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