The Gibbs Function, Spontaneity, and Walls

R. J. Tykodi
University of Massachusetts Dartmouth, North Dartmouth, MA 02747
J. Chem. Educ., 1996, 73 (5), p 398
DOI: 10.1021/ed073p398
Publication Date (Web): May 1, 1996

Abstract

For the expansion-into-the-vacuum process involving a saturated vapor, previously analyzed by Schomaker and waser and by myself, I assert that in general Delta G (composite) is undefined and that for the special case of bulbs with perfectly rigid walls Delta G (composite) is weakly positive. I show that the seemingly contradictory results of Schomaker and Waser are merely the consequences of their use of eccentric or anti-conventional terminology: they calculate the change in the Availability function for the process and call that change "Delta G (composite)".

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Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Physical Chemistry

Keywords (Feature):

Symposium Report

Keywords (Subject):

Thermodynamics

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  • Received: August 03, 2009

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