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Binary Solid-Liquid Phase Diagrams of Selected Organic Compounds. A Complete Listing of 15 Binary Phase Diagrams

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Jürgen Gallus , Qiong Lin , Andreas Zumbühl , Sebastian D. Friess , Rudolf Hartmann and Erich C. Meister

Physical Chemistry Laboratory, Swiss Federal Institute of Technology, ETH Zentrum, CH-8092 Zurich, Switzerland

J. Chem. Educ., 2001, 78 (7), p 961

DOI: 10.1021/ed078p961

Publication Date (Web): July 1, 2001

Section:

History, Education, and Documentation

Abstract

The investigation of multicomponent solid-liquid equilibria is of considerable importance in chemistry and materials science. Thus the determination of phase diagrams is a standard experiment in most undergraduate physical chemistry laboratory courses. This article proposes a simple and low-cost apparatus that allows accurate and reproducible measurements in a broad temperature range. Fifteen solid-liquid phase diagrams of binary systems that result from the systematic combination of six aromatic hydrocarbons are summarized. The aromatic hydrocarbons selected are easily accessible and melt in a convenient temperature range. The phase diagrams can be described within the experimental accuracy by the theoretical behavior of ideal systems with no solid solubility. This material is particularly well suited for a laboratory course, to illustrate the concepts of inhomogeneous equilibria with a large number of systems.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Pedagogy):

Distance Learning / Self Instruction

Keywords (Subject):

Equilibrium

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

Fast Micro-Kelvin Resolution Thermometer Based on NTC Thermistors
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Journal of Chemical & Engineering Data2011 56 (12), 4823-4828
- Fast Micro-Kelvin Resolution Thermometer Based on NTC Thermistors
  Franz E. Wudy, Dominik J. Moosbauer, Michael Multerer, Georg Schmeer, Hans-Georg Schweiger, Christoph Stock, Peter F. Hauner, Gottfried A. Suppan, and Heiner J. Gores
  Journal of Chemical & Engineering Data2011 56 (12), 4823-4828
  Thermometers with temperature resolutions of equal or better than 1 mK typically make use of platinum wire temperature sensors such as the PT100. Alternating current techniques to read out these fairly low dynamic temperature sensors are complex and ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Interactive Two-Component Phase Diagrams
J. Charles Williamson
Journal of Chemical Education2009 86 (5), 653
- Interactive Two-Component Phase Diagrams
  J. Charles Williamson
  Journal of Chemical Education2009 86 (5), 653
  To help students connect a dynamic change of state with its representation on an equilibrium phase diagram, six interactive two-component phase diagrams have been created using Excel spreadsheets.
  Abstract | Hi-Res PDF | PDF w/ Links