Are the equilibrium concentrations for a chemical reaction always uniquely determined by the initial concentrations?

Weltin, E.

doi:10.1021/ed067p548

Cited by 19 publications

(17 citation statements)

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“…As the number of components increases the question arises whether the hyperplanes and hypersurfaces will still share only a single common point (locus). They will, because of the proven assertion that a unique chemical equilibrium state exists under a given set of conditions (amounts of components, temperature, pressure, volume). , …”

Section: Discussionmentioning

confidence: 99%

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Geometrical Description of Chemical Equilibrium and Le Châtelier’s Principle: Two-Component Systems

Novak

2017

J. Chem. Educ.

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Chemical equilibrium is one of the most important concepts in chemistry. The changes in properties of the chemical system at equilibrium induced by variations in pressure, volume, temperature, and concentration are always included in classroom teaching and discussions. This work introduces a novel, geometrical approach to understanding the chemical system at equilibrium with the example of a simple two-component system and shows how the equilibrium changes under the influence of external perturbations. The paper discusses how thermodynamic factors (contained in the equilibrium constant K) and the conservation of mass principle govern the equilibrium state. The equilibrium and its changes are described using the geometrical representation in concentration space. The goal of this work is to help students better understand the basis behind the well-known Le Châtelier’s principle and equilibrium in general.

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Section: Discussionmentioning

confidence: 99%

“…They will, because of the proven assertion that a unique chemical equilibrium state exists under a given set of conditions (amounts of components, temperature, pressure, volume). 15,16 ■ AUTHOR INFORMATION Corresponding Author *E-mail: inovak@csu.edu.au.…”

Section: ■ Conclusionmentioning

confidence: 99%

Geometrical Description of Chemical Equilibrium and Le Châtelier’s Principle: Two-Component Systems

Novak

2017

J. Chem. Educ.

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“…The equilibrium concentrations of various species are governed by the extent of the of papers Weltin has demonstrated that the extent of a reaction and the equilibrium concentrations are uniquely de-termined by initial concentrations (1)(2)(3). He has suggested the bisection method for calculating the equilibrium extent of a reaction (2).…”

Section: Multicomponent Spectrophotometric Analysismentioning

confidence: 99%

Spreadsheet Tools for Solving One-Equation Chemical Equilibrium Problems

Joshi¹

1994

J. Chem. Educ.

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“…The program works by minimizing the Gibbs Free Energy as a function of the extent of reaction using an iterative algorithm. This method for single step equilibria (5,6) has been extended to competing and coupled reactions (7).…”

Section: Equilibrium Calculatormentioning

confidence: 99%

Oxidation Number Rules: A Program to Test the Effect of Various Rules on the Assignment of Oxidation Numbers

Birk¹

1993

J. Chem. Educ.

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Are the equilibrium concentrations for a chemical reaction always uniquely determined by the initial concentrations?

Cited by 19 publications

References 0 publications

Geometrical Description of Chemical Equilibrium and Le Châtelier’s Principle: Two-Component Systems

Geometrical Description of Chemical Equilibrium and Le Châtelier’s Principle: Two-Component Systems

Spreadsheet Tools for Solving One-Equation Chemical Equilibrium Problems

Oxidation Number Rules: A Program to Test the Effect of Various Rules on the Assignment of Oxidation Numbers

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