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Solubility and Thermodynamics: An Introductory Experiment
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Abstract
This article describes a laboratory experiment suitable for high school or freshman chemistry students in which the solubility of potassium nitrate is determined at several different temperatures. The data collected is used to calculate the equilibrium constant, delta G, delta H, and delta S for dissolution reaction. The simplifying assumptions are noted in the article.
Keywords (Audience):
First-Year Undergraduate / GeneralKeywords (Domain):
Laboratory InstructionKeywords (Feature):
Filtrates and ResiduesKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Precipitation / SolubilityCiting Articles
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This article has been cited by 5 ACS Journal articles (5 most recent appear below).

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Gibbs Energy Changes during Cobalt Complexation: A Thermodynamics Experiment for the General Chemistry Laboratory
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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 ...

A Simple Method for Determination of Solubility in the First-Year Laboratory
Heather D. Harle , Julia A. Ingram , Phyllis A. Leber , Kenneth R. Hess and Claude H. YoderJournal of Chemical Education2003 80 (5), 560A Simple Method for Determination of Solubility in the First-Year Laboratory
Heather D. Harle , Julia A. Ingram , Phyllis A. Leber , Kenneth R. Hess and Claude H. YoderJournal of Chemical Education2003 80 (5), 560A method for determining solubility that is fast and requires only a Büchner-type filter funnel, a 500-mL round-bottom flask, and an analytical balance is described. The loss in weight of a compound after suction extraction with one liter of water ...

The Effects of Salts and Nonelectrolytes on the Solubility of Potassium Bitartrate: An Introductory Chemistry Discovery Experiment
Charles J. MarzzaccoJournal of Chemical Education1998 75 (12), 1628The Effects of Salts and Nonelectrolytes on the Solubility of Potassium Bitartrate: An Introductory Chemistry Discovery Experiment
Charles J. MarzzaccoJournal of Chemical Education1998 75 (12), 1628An introductory chemistry discovery experiment on the effect of the presence of various solutes on the solubility of potassium bitartrate (KHT) is presented. Aqueous solutions of KCl, NaCl, MgSO4 and glucose with concentrations ranging from 0.0 to 0.10 M ...
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- Received: August 03, 2009
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