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  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > October  >
Chemical Education Today
Corrections
Correction to "Achieving Absolute Negative Pressures in Liquids: Precipitation Phenomena in Solution" (J. Chem. Educ. 2002, 79, 869)

Cover
October 2002
Vol. 79 No. 10
p. 1203

Abstract
In the article "Achieving Absolute Negative Pressures in Liquids: Precipitation Phenomena in Solution" (J. Chem. Ed. 2002, 79, 869) Figure 2 printed incompletely. The accurate representation of Figure 2 is provided below.

A fig 2A

B fig 2B

C fig 2C

D fig 2D

E fig 2E

F fig 2F

Figure 2. Stage-presentation of the Berthelot's experiment using a 1.8% (w/w) solution of 25,000 polystyrene in acetone. A: Two-phase region at positive pressure (vapor pressure of the solution); cloudiness appears from the bottom, but the bubble is present at the top. B: Transparent, homogeneous solution, recovered by heating. C: Capillary at the filling temperature (T = Tfill); bubble disappears. D: Final point of the prepressurization stage; filled capillary at moderately high positive pressure. E: Phase transition (cloud point) at negative pressure; cloudiness rises from the bottom, no bubble is present (T = Tcp < Tfill). F: Collapse of the metastable liquid at negative pressure, where a small bubble starts to form at the top, while the system is on its way to a totally stable state, at positive pressure (vapor pressure).

More Information
*  Citation
J. Chem. Educ. 2002 79 1203.
*  Keywords
Equilibrium; Laboratory Instruction; Liquids; Phase Transitions / Diagrams; Solutions / Solvents; Thermodynamics; Corrections
*  History
Created:
Last Updated:
August 29, 2002
March 16, 2005
Link to Article added (May 2004).
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